taxonID	type	description	language	source
03D587F6FFF8FF85FF1C9EA2FD5DF854.taxon	diagnosis	Diagnosis: — This new genus differs from Alcantarea, Stigmatodon, and Vriesea by its unique combination of morphological characters, such as unappendaged petals 4 to 6 times longer than wide, forming a narrow campanulate corolla, pollen with the sulcus margins more or less well defined but not sharply cut, the sulcus covered with a kind of operculum of almost smooth exine elements with some perforations, stigma of the convolute-blade II type, and seeds with a basal appendage equalling to distinctly shorter than the apical appendage.	en	Leme, Elton M. C., Halbritter, Heidemarie, Barfuss, Michael H. J. (2017): Waltillia, a new monotypic genus in Tillandsioideae (Bromeliaceae) arises from a rediscovered, allegedly extinct species from Brazil. Phytotaxa 299 (1): 1-35, DOI: 10.11646/phytotaxa.299.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.299.1.1
03D587F6FFF8FF85FF1C9EA2FD5DF854.taxon	materials_examined	Type: — Vriesea hatschbachii L. B. Sm. & R. W. Read.	en	Leme, Elton M. C., Halbritter, Heidemarie, Barfuss, Michael H. J. (2017): Waltillia, a new monotypic genus in Tillandsioideae (Bromeliaceae) arises from a rediscovered, allegedly extinct species from Brazil. Phytotaxa 299 (1): 1-35, DOI: 10.11646/phytotaxa.299.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.299.1.1
03D587F6FFF8FF85FF1C9EA2FD5DF854.taxon	description	Description: — Plants terrestrial (including saxicolous) growing along the margins of running streams or in periodically soaked terrains. Leaves coriaceous, forming non-impounding rosettes; leaf blades sublinear, long-attenuate. Inflorescence usually simple or sometimes compound. Flowers distichous, downward secund at anthesis, nocturnal, weakly scented; petals free, 4 to 6 times longer than wide, recurved at anthesis and forming a narrow campanulate corolla, becoming erect again afterwards, unappendaged; filaments free, slightly complanate; anthers with the pollen sacs with a prevailingly frontal line of dehiscence, connective area completely exposed and not covered by the margins of the pollen sacs at anthesis; pollen with elliptic outline, ca. 70 μm in diameter, sulcate, the sulcus with moderately to weakly defined margins, covered with a kind of operculum of almost smooth exine elements with some perforations; ovary 1 / 4 to 1 / 3 inferior (considering the nectary), placentation totally superior; ovules caudate; stigma of the convolute-blade II type, green. Fruits a septicidal capsule; seeds with the umbrella-like, plumose basal coma equalling to distinctly shorter than the straight, undivided, well developed apical appendage. Species: — Waltillia is a monotypic genus.	en	Leme, Elton M. C., Halbritter, Heidemarie, Barfuss, Michael H. J. (2017): Waltillia, a new monotypic genus in Tillandsioideae (Bromeliaceae) arises from a rediscovered, allegedly extinct species from Brazil. Phytotaxa 299 (1): 1-35, DOI: 10.11646/phytotaxa.299.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.299.1.1
03D587F6FFF8FF85FF1C9EA2FD5DF854.taxon	etymology	Etymology: — This new genus honors the botanist Walter Till, Curator of the Herbarium of the Department of Botany and Biodiversity Research, University of Vienna, leading authority in Bromeliaceae in general, and in subfamily Tillandsioideae in especial. Distinctive characters: — Waltillia is a member of tribe Vrieseeae, subtribe Vrieseinae, being closely related to Alcantarea, Stigmatodon and Vriesea (see results section above and table 2). However, this new genus differs from Alcantarea by petals 4 to 6 times longer than wide (vs. 10 to 15 times longer than wide), forming a narrow campanulate corolla (vs. corolla not campanulate), remaining persistent and becoming erect after anthesis (vs. ephemeral and flaccidescent after anthesis), unappendaged (vs. bearing well developed basal appendages); pollen sacs of the anthers with the line of dehiscence prevailingly frontal (vs. prevailingly lateral), leaving the connective area completely exposed and not covered by the margins of the pollen sacs at anthesis (vs. the opposed margins of the pollen sacs becoming strongly recurved and touching each other and completely covering the connective area at anthesis), pollen with sulcus margins more or less well defined but not sharply cut (vs. margins sharply cut), sulcus covered by a kind of operculum of almost smooth exine elements with some perforations (vs. sulcus without any or bearing only small and low ornamental elements), and stigma of the convolute-blade II type (vs. conduplicate-erect or conduplicate-patent types). In relation to Stigmatodon, it differs by having the leaf blades sublinear-attenuate, strongly canaliculate (vs. often triangular-acuminate, weakly if at all canaliculate), petals unappendaged (vs. bearing well developed basal appendages), stigma of the convolute-blade II type, densely papillose (vs. tubo-laciniate type, without papillae or rarely sparsely papillose), pollen with the sulcus covered by a kind of operculum of almost smooth exine elements with some perforation (vs. the sulcus covered by exine elements separated from each other, forming isolated exine islands), seeds with a basal appendage equalling to distinctly shorter than the apical appendage (vs. basal appendage distinctly longer than the seed proper and a short apical appendage). In comparison with Vriesea, it differs by having the leaf rosette with no or rudimentary water-holding capacity (vs. leaf rosette with distinct water-holding capacity), petals unappendaged (vs. bearing well developed basal appendages), pollen with the sulcus covered by a kind of operculum of almost smooth exine elements with some perforation (vs. the sulcus covered by exine elements separated from each other, forming isolated exine islands), and seeds with a basal appendage equalling to distinctly shorter than the apical appendage (vs. basal appendage well developed and many times longer than the inconspicuous apical appendage).	en	Leme, Elton M. C., Halbritter, Heidemarie, Barfuss, Michael H. J. (2017): Waltillia, a new monotypic genus in Tillandsioideae (Bromeliaceae) arises from a rediscovered, allegedly extinct species from Brazil. Phytotaxa 299 (1): 1-35, DOI: 10.11646/phytotaxa.299.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.299.1.1
03D587F6FFF9FF87FF1C9ECBFC77F9EE.taxon	materials_examined	Additional specimens examined: — BRAZIL. Minas Gerais: Gouveia, 22 January 1978, G. Hatschbach 40820 (MBM!); Gouveia, road Presidente Juscelino to Gouveia, BR 259, near the road to Camelinho, 1177 m elevation, 5 August 2010, E. Leme 8415, E. Guarçoni, B. Paixão & R. Oliveira (RB!); 1224 m elevation, 5 August. 2010, E. Leme 8417, E. Guarçoni, B. Paixão & R. Oliveira (RB!) [DNA B 1579]; 1233 m elevation, 27 November 2010, E. Leme 8486, O. Ribeiro & R. Oliveira (RB!) [DNA B 1578]; 1250 m elevation, 27 November 2010, E. Leme 8487, O. Ribeiro & R. Oliveira (RB!); 1214 m elevation, 27 November 2010, E. Leme 8488, O. Ribeiro & R. Oliveira (RB!) [DNA B 987]; 1214 m elevation, 27 November 2010, E. Leme 8489, O. Ribeiro & R. Oliveira (RB!) [DNA B 1576]; 1202 m elevation, 11 December 2011, E. Leme 8599, O. Ribeiro & R. Oliveira (RB!); 1222 m elevation, 11 December 2011, E. Leme 8601, O. Ribeiro & R. Oliveira (RB!); Santana do Pirapama near the border with Congonhas do Norte, Vale Mariazinha-Barbado, owner Antonio Leandro, near Trilha da Siurinha (Serra da Siurinha), 1220 m elevation, 26 November 2010, E. Leme 8475, O. Ribeiro, R. Oliveira & C. Oliveira (RB!) [DNA B 988]; E. Leme 8476, O. Ribeiro, R. Oliveira & C. Oliveira (RB!) [DNA B 989]; E. Leme 8477, O. Ribeiro, R. Oliveira & C. Oliveira (RB!) [DNA B 1577].	en	Leme, Elton M. C., Halbritter, Heidemarie, Barfuss, Michael H. J. (2017): Waltillia, a new monotypic genus in Tillandsioideae (Bromeliaceae) arises from a rediscovered, allegedly extinct species from Brazil. Phytotaxa 299 (1): 1-35, DOI: 10.11646/phytotaxa.299.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.299.1.1
03D587F6FFF9FF87FF1C9ECBFC77F9EE.taxon	distribution	Distribution, habitat and phenology: — Waltillia hatschbachii is endemic to Minas Gerais state, with two known subpopulations: one situated at the type locality, in the county of Gouveia, Diamantina plateau, and the second one distant about 40 km in straight line in the county of Santana do Pirapama, close to the border with the county of Congonhas do Norte, in the domain of the Serra do Cipó Range, in an ecologically similar microhabitat. The plants are associated with perennial streams of clean running water, along narrow valleys, with some shrubby vegetation at the margins, in the Campos Rupestres domain, above 1150 m elevation. Plants are terrestrial, deeply rooted in sandy soils, including saxicolous habit in organic-rich soils accumulated between rocks or on rock surfaces. They form island-like dense clumps of several individuals with vegetative propagation by means of 5 to 8 short axillary shoots, being well disguised amidst the grass-like predominant vegetation due to its general gramineous appearance without any showy feature typical for Bromeliaceae (e. g., bulky rosette structure, colorful floral parts). Plants are usually concentrated right on the margins of the streams, very close to the water, and often thriving in water-logged terrains. Waltillia hatschbachii is heliophilous, growing exposed to full sunlight, but was also observed in partially shaded sites where shrubs predominate. Its thickly coriaceous leaves become strongly enrolled during the dry winter season, which may be due to strong reduction of environmental water / humidity availability. The known subpopulations present reduced numbers of groups of individuals which are more or less concentrated in geographically restricted areas. However, the natural difficulties to locate non-flowering plants due to its disguising grass-like cryptic habit intermingled with the dense herbaceous vegetation, must be taken into consideration in an eventually underestimation of the population size. The flowering season of Waltillia coincides with that of most Alcantarea and many Vriesea species, starting in November and continuing up to January, during the period of the summer rains. In August, very old fruits were observed, but the few not released plumose seeds remained viable with almost 100 % germination rate under controlled conditions in cultivation. Conservation Status: — The known subpopulations of Waltillia hatschbachii are located in areas not included in any conservation unit. The current main threat is the frequent fires that are continuously destroying the Campos Rupestres vegetation at the studied sites. The proximity of a highway to the type population near Gouveia also increases the risk of fire, illegal human occupation of the area, plus eventual plant extraction, despite this grass-like and poor colored tillandsioid, besides being of rarity, does not have any horticulturally attractive features. Applying the criteria adopted by the International Union for the Conservation of Nature (IUCN 2001), this unique species can be considered critically endangered [CN; B 2 ab (ii)], since its area of occurrence is estimated to be less than 10 km 2 (B 2), its habitat is severely fragmented (B 2 a) and in continuous decline [B 2 b (ii)]. In situ and ex situ conservation programs to assure the survival of Waltillia hatschbachii are urgently needed. The current ex situ conservation initiative by means of propagation from field collected seeds (fig. 9 G), with the production of several plantlets now distributed to Rio de Janeiro Botanical Garden and Fundação Zoobotânica de Belo Horizonte, Minas Gerais, may represent the first step toward the future survival of the species.	en	Leme, Elton M. C., Halbritter, Heidemarie, Barfuss, Michael H. J. (2017): Waltillia, a new monotypic genus in Tillandsioideae (Bromeliaceae) arises from a rediscovered, allegedly extinct species from Brazil. Phytotaxa 299 (1): 1-35, DOI: 10.11646/phytotaxa.299.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.299.1.1
