446 MR. R. ALLEN ROLFE ON THE GENUS VANILLA. 
clinandrio affixa, incumbens, convexa vel semiglobosa, opercu- 
lata, loculis discretis, pollinia pulvereo-granulosa. Stigma 
transversum sub rostello situm; rostellum latum subarticu- 
latum. Capsula linearis vel oblonga, carnosa, tarde dehiscens ; 
semina nigra, nitida. 
Herbe valid, alte scandentes, ramose, foliose vel aphylle, 
ramis radices adventicias emittentibus. Folia coriacea vel 
carnosa, sessilia vel breviter petiolata. Racemi seepissime 
axillares, subsessiles vel pedunculati. Flores magni. Bractewe 
ovatee vel oblongee sepius parvee. Lindl., Gen. and Sp. Orch., 
p- 434; Bauer, Ill. Orch. Gen., tt. 10, 11; Benth. et Hook. f., 
Gen. Pl., iii. p. 590. Myobroma, Salisb. Parad. Lond., t. 82. 
Kery to Specizs. 
A. Stems leafy... ese ... Section Foiios#&. 
* Disc of lip without a crest or tuft of hairs or appendages. 
+ Lip three-lobed, adnate to column at base only. 
t Stem leaves 4-7 in. long, or occasionally longer. 
a. Leaves broadly elliptic-lanceolate or elliptic-ovate. 
a. Leaves elliptic ovate to elliptical. 
i. Inflorescence axillary or subterminal; bracts much smaller 
than leaves. 
a. Sepals and petals 6-7 lin. broad... 1. V. inodora. 
8. Sepals and petals 3-4 lin. broad. 
Leaves ovate. Guiana species... 2. V. ovata. 
Leaves elliptic - ovate. New 
Granada species save 3. V. Methonica. 
ii. Inflorescence terminal ; bracts large 
and leaf-like 4. V. Pfaviana. 
aa. Leaves elliptic-lanceolate 5. V. organensis. 
ae Leaves oblong... vee 6. V. acuta. 
{ Stem leaves about 3 in. long .. 7. V. parvifolia. 
+ Lip entire or subentire, adnate to 
sides of column, up to middle or 
beyond. 
Inflorescence axillary ; _ fruits 
elongate-linear .. 8. V. Wrightiz. 
Inflorescence terminal ; fruits 
linear-oblong _.... 9. V. palmarum. 
** Disc of lip with a central crest or r tuft of 
hairs or appendages. 
+ Tube, formed by union of sides of lip 
with column, about as broad as long. 
