Justicia reginaldii Wassh.

Villanueva-Espinoza, Rosa, Deng, Yunfei, Scotland, Robert & Wood, John R. I., 2025, Preliminary notes on Justicia (Acanthaceae) in Peru, PhytoKeys 258, pp. 1-123 : 1-123

publication ID	https://doi.org/10.3897/phytokeys.258.144435
DOI	https://doi.org/10.5281/zenodo.15676499
persistent identifier	https://treatment.plazi.org/id/F43FBC57-BFA0-58CE-A2F8-BEBE197E4F7D
treatment provided by	PhytoKeys by Pensoft
scientific name	Justicia reginaldii Wassh.
status

Treatment

24. Justicia reginaldii Wassh. View in CoL , Fl. Ecuador 89: 180. 2013. ( Wasshausen 2013: 180)

Type.

Ecuador • Camino Zaruma – Loja, 1100 m, May 1958, R. Espinosa 2409 ( holotype US-01106126 , isotype K-000544761 ) .

Description.

Subshrub to 70 cm in height; stems puberulent when young. Leaves very shortly petiolate, lamina 2.5–5 × 1.5–2.5 cm, lanceolate to ovate, apex obtuse, base cuneate, pubescent; petioles. Inflorescence of terminal bracteate spikes, the flowers in very short axillary spikes, commonly reduced to subsessile opposite pairs; bracts foliose below, diminishing in size to 6 × 2 mm upwards; calyx 5 - lobed to about three quarters its length, lobes oblong, 4–5 × 1 cm, glabrous or puberulent; corolla relatively large, 2.2–2.5 cm long, gaping, white with purple markings, puberulent, the tube 12–14 mm long, upper lip erect, hooded, notched, lower lip 3 - lobed, the lobes c. 6 mm long, rounded; anther thecae parallel, slightly superposed, oblong, 2.5 × 0.75 mm, the lower basally apiculate; pollen prolate-perprolate 43–47 × 27–29 μm, 2 - aperturate, porate, grain covered in verrucae (Fig. 50 C View Figure 50 ). Capsule 7 mm long, subglobose, glabrous, 2 - seeded.

Illustration.

Fig. 22 View Figure 22 .

Phenology.

March to May.

Habitat.

Rocky scrubby mountain sides, 1600–1700 m ( 1100 m in Ecuador).

Distribution.

A rare species restricted to southern Ecuador and northern Peru. New record for Peru. Fig. 61 View Figure 61 .

Material examined.

Peru • Cajamarca: Prov. Cajamarca, Dist. Matará, entre Tingo y San Miguel de Asunción, Chileto , [ 7°16'S, 78°16'W], 1600–1700 m, 10 April 1950, R. Ferreyra 7070 ( K, MO, US) GoogleMaps .

Note.

The following specimens from dry forest dominated by Eriotheca Schott & Endl. at 2137–2281 m in Ancash and Huánuco differ in the smaller corolla c. 1.5 cm long, shorter capsule ( 4–5 mm long) and slightly smaller calyx. However they share the same terminal inflorescence with axillary flowers, the same gaping corolla and 2 - seeded capsule. The leaves are similar in shape but are very variable in size. They may simply be a variant of the poorly known Justicia reginaldii .

Additional material examined.

Peru • Ancash: Prov. Sihuas, Dist. Acobamba, entre Quiches y Jocos, 0.96 km NW del Puente Isabel Gonzales Lozano , 8°20'36.5"S, 77°31'28.9"W, 2153 m, 6 March 2021, P. González et al. 7656 (E, USM) GoogleMaps ; • ibid., 1.53 km NW del Puente Isabel Gonzales Lozano , 8°20'20.7"S, 77°31'38.7"W, 2281 m, P. González et al. 7634 (E, USM) GoogleMaps . Huánuco: Prov. Huacaybamba, Dist. Huacaybamba, right bank of Río Marañón , 9°2'9.2"S, 76°59'50.2"W, 2137 m, 25 March 2021, P. González et al. 9449 (E, USM) GoogleMaps .