Rhododendron

Rhododendron View in CoL L.

subg. Rhododendron sect. Rhododendron sect. Pogonanthum G.Don sect. Schistanthe Schltr. (1917) 140. — Lectotype: R. hansemannii Warb. (‘ hansemanni ’), designated by Sleumer (1960: 176). This species is now included in R. macgregoriae F.Muell.

subsect. Discovireya Sleumer (1949) 539. — sect. Discovireya (Sleumer) Argent (2006) 21, 37. — Type: R. retusum (Blume) Benn. ( Vireya retusa Blume )

subsect. Euvireya H.F.Copel. (1929) 137, 159. — Vireya Blume (1826) 854, nom. illeg., non Raf. (1814). — subg. Vireya C.B. Clarke (1882) 462. — Rhododendron L. § Vireya (C.B.Clarke) Hook.f. ex Drude (1897) 36. — sect. Vireya (C.B.Clarke) H.F.Copel. (1929) 136, 151. — ser. Javanica Sleumer (1960) 176. — sect. Euvireya (C.B.Clarke) Argent (2006) 22, 140, nom. superfl. — Type: R. javanicum (Blume) Benn. ( Vireya javanica Blume )

sect. Hadranthe Schltr. (1917) 140. — Lectotype: R. hellwigii Warb. , designated by Sleumer (1960: 71)

sect. Hapalanthe Schltr. (1917) 140. — Lectotype:

R. zoelleri Warb. View in CoL , designated by Sleumer (1960: 176)

sect. Linnaeopsis Schltr. (1917) View in CoL 140, 144. — subsect. Linnaeopsis (Schltr.) Sleumer (1949) View in CoL 541. — ser. Linnaeoidea Sleumer (1960) 134. — Type: R. linnaeoides Schltr. View in CoL

sect. Zygomorphanthe Schltr. (1917) 140. — Lectotype: R. keysseri F.Först. , designated by Sleumer (1960: 176). (This species is now included in R. culminicola F.Muell. )

subsect. Leiovireya H. F.Copel. (1929) 137, 167. — Type :

R. crassifolium Stapf subsect. Linearanthera H.F.Copel. (1929) 137, 159. —

Type: R. vidalii Rolfe subsect. Malesia H. F.Copel. (1929) 136, 151 . — Type:

R. bagobonum H.F.Copel.

subsect. Solenovireya H.F.Copel. (1929) 136, 158. —

Type: R. jasminiflorum Hook.

subsect. Phaeovireya Sleumer (1949) 539.— sect. Phaeovireya (Sleumer) Argent (2006) 21, 70, nom. superfl. — Type: R. beyerinckianum Koord.

subsect. Astrovireya Sleumer (1949) 539. — Type: R. com-

monae F.Först.

subsect. Schizovireya Sleumer (1949) 538.— Type: R.macgregoriae F.Muell.

subsect. Siphonovireya Sleumer (1960) 68. — sect. Siphonovireya (Sleumer) Argent (2006) 21, 62. — Type: R. habbemae Koord.

subsect. Albovireya Sleumer (1960) 107. — sect. Albovireya (Sleumer) Argent (2006) 22. — Type: R. album Blume ser. Saxifragoidea Sleumer (1960) 141. — subsect. Saxifragoidea (Sleumer) Argent (2006) 22, 153. — Type: R. saxifragoides J.J.Sm.

ser. Taxifolia Sleumer (1960) 141. — Type: R. taxifolium

Merr.

ser. Stenophylla Sleumer (1960) 141. — Type: R. steno-

phyllum Hook.f.

ser. Citrina Sleumer (1960) 144. — Type: R. citrinum

(Hassk.) Hassk.

ser. Buxifolia Sleumer (1960) 145. — Type: R. buxifolium

H.Low ex Hook.f.

ser. Dendrolepidon Argent, A.L.Lamb & Phillipps (1984)

117. — Type: R. rugosum H.Low ex Hook.f.

subsect. Malayovireya Sleumer (1958) 48. — sect. Malayovireya (Sleumer) Argent (2006) 21. — Type: R. malayanum Jack subsect. Pseudovireya (C.B.Clarke) Sleumer (1949) 537. — subg. Pseudovireya C.B. Clarke (1882) 464. — ser. Vaccinioides Hutch. (1930) 817. — sect. Pseudovireya (C.B.Clarke) Argent (2006) 19. — Type: R. vaccinioides Hook.f.

Notes — Blume’s genus Vireya ( Blume 1826) is illegitimate being a later homonym of Vireya Raf. (1814, Gesneriaceae ).

Characteristic morphological features, noting that exceptions may sometimes occur in individual species, that serve to differentiate between the four subsections of sect. Schistanthe are as follows:

subsect. Discovireya — Scales entire to undulate; corolla tubular; staminal filaments glabrous or hairy from the base;

capsule valves not twisting after dehiscence.

subsect. Euvireya — Scales sessile or stalked, scattered to very dense, not of two obviously different size classes, lobed to deeply incised (or sometimes entire) and the centre not dark-coloured; corolla tubular, tubular-campanulate, campanulate, rotate-campanulate, funnel-shaped, salver-shaped or suburceolate, and straight or curved; staminal filaments glabrous or hairy from the base; capsule valves twisting after dehiscence.

subsect. Malayovireya — Scales sessile, dense, of two obviously different size classes, lobed and the centre dark-coloured; corolla tubular, tubular-campanulate, funnel-shaped,

campanulate to rotate­campanulate; staminal filaments glabrous or hairy from the base; capsule valves twisting after dehiscence.

subsect. Pseudovireya — Scales entire; corolla rotate-campanulate; staminal filaments glabrous proximally and distally and hairy in the middle region; capsule valves not twisting after dehiscence.