270 CRAIB—REVISION OF PETROCOSMEA. 
Calyx segments nearly — on back at wits ao ciliate 
on margin . P. oblata. 
Calyx segments pilose on back at flowering tim tim 
Midrib and lateral nerves conspicuous eee ‘broad and a 
densely covered with patent white hairs 3. P. nervo 
Midrib and lateral nerves not conspicuous or only oesmciontlld 
subconspicuous below. 
Leaves up to 4.5cm.long . : : . 4. P. flaccida. 
eaves up to 3 cm. long . P. sinensis. 
Anticous lip “sigiaieee — than posticous, the latter ‘clasping the 
: (§ Anisochilus, Hemsl.) 
Filament glabrous 
Anthers almost 5m m. long, exserted ; leaves manned pein! and 
regularly few-toothed, cuneate at base, up to2c 
. le enryi. 
Anthers under 2 mm. .. long, included : leaves entire, crenulate or 
shallowly toothed, membranous, up to 3 cm. long, cuneate to 
cordate at base. 
Style shortly ‘pubescent on the lower part . 7. P. Forrestit. 
Style with very long silky hairs on the lower part. 
Anthers about 0.6 mm. long, broader than long 
age ‘Cavaleriei. 
Anthers 1-1 5 mm. long, longer than broad . g. P. barbata. 
Filaments not glabrous. 
Leaves up to 10 cm. ene i : ; . Io. P. Kerri. 
Leaves up to 3 cm. long. 
Filaments about twice as long as anthers, which are under 
I mm. 
Calyx sacar about 3 mm. long, filaments euraiehy : 
P. Mairet. 
Calyx segments about 4 mm. long, filaments ee towards 
apex 12. P. minor. 
Signage slightly longer ¢ or shorter than. anthers or about half 
ong as anthers, the anthers bane at least 2.5 mm. long. 
ace twice as long as filament . 13. P. Duclouxi. 
Anther subequal to filament. 
Leaves up to 2 cm. rg mostly elliptic to Se ovate ; 
calyx about 4 mm P. Martini. 
Leaves up to 3 cm. long, mostly ovate to elliptic- -ovate ; 
calyx noant 6 mm. long 15. P. iodioides. 
ENUMERATION OF THE SPECIES. 
1. P. grandiflora, reopen in Kew Bull., 1895, p. 115; id 
Hook: Ter PE, t: 24 
Yunnan. Mengtze, crevices of limestone precipices, 6400 ft. 
Hancock, 115. 
apo 2. P. oblata, Craib, sp. nov. 
Herba nana, rhizomate brevi crasso. Folia oblata vel orbi- 
cularia, Brite: rotundata truncatave, basi truncata vel cordatula, 
usque ad 3 cm. diametro, ut videtur viva plus minusve carnosa, 
