66 
Zanzibar. Alb. Roscher. Vivam habemus in horto 
Hamburgensi a domino el. Hildebrandt. 
194. Vanilla Phalaenopsis Rehb. fil.: Van. 
Houtte flore des serres XVIL. 97: aphylla omnino, racemo 
validissimo congesto, bracteis parvulis acutis, sepalis ligu- 
latis obtuse acutis, tepalis cuneato ovatis obtuse acutis 
paulo crispis, labello transverse rhombeo paulo aento, 
antice undulato, ceristis duabus piloso papillosis a basi 
versus medium, androelinii lacinia postica cueullata lobis 
lateralibus erenulatis, fructibus erassis brevibus. 
Vanilla Walkerae Wight optime recedit tepalis la- 
bellogue valde undulatis, labelli latitudine maxima per 
medium (nec antice), androclinii lacinia'lineari ligulata, 
fructibus multo gracilioribus longieribus. Color toto 
eoelo differt: in V. Walkerae labelli faux rufida flavo- 
cincta — in V. Phalaenopside totum labellum flavım. 
Juxta speeimina alcohole asservata concedente ill. Oli- 
ver in museo Kewersi descripsi & delineavi, 
„Either without leaves or having very small deeidu- 
ous ones on its younger paris. Common in all the is- 
lands, elimbing over rocky and bushes in shrubby parts, 
but seldom found in damp shady forests. It prefers sun- 
shine and light to shade and moisture. Its roots adhere 
to rocks over which the plants like to grow, although 
the rocks are frequentliy heated by the sun, that they 
can scarcely be touched by the hand.“ Horne, 
195. Vanilla Poitaei: sepalis tepalisque ligulatis. 
acutis, labello cum columna connato, antice libero expanso, 
latissime dilatato trilobo, lobis lateralibus rotundatis an- 
tice erispis, lobo medio triangulo crispo, omnibus atrovio- 
