162 FLORA VITIENSIS. 
Calyx 5-fidus, sepalis ovatis v. ovato-lanceolatis. Corolla rotata, 5-partita. Corona staminea 5. 
phylla; foliolis simplicibus, acuminatis, carnosis, gynostegio promaneniia plus minusve adnatis perraro 
stigma superantibus. Antherze membrana terminate, Massve pollinrs Peavey vy. subascendentes 
v. processu tereti flexuoso erecta, minute, ventricose, Stigma muticum, prominulum, obscure emar- 
ginatum. Folliculi lwves, apice attenuati, compressi, hine subangulati, Semina comosa.— Herbre 
aut frutices volubiles; pedunculi interpetiolares graciles, haud raro flexuoso-geniculati; umbellulis 
secus pedunculum alternatim dispositis; floribus szepissime parvis. 
The United States Exploring Expedition found two new Polynesian species of this genus, one in the 
Samoan Islands (7. Samoensis, A. Gray) and the other in Viti. 
1. T. Brackenridgei, A. Gray in Proceed. of the Amer. Acad. vol. v.; volubilis, glabra ; 
foliis ovatis subcordatis mucronatis ; pedunculis petiolum apice haud glanduliferum subzequantibus ; 
unibellulis co-floris; floribus carneis undique glabris; corona staminea e glandulis seu gibberibus 
carnosis lateraliter compressis usque ad apicem acutum adnatis (in sicco subulatis) anthera breviorl- 
bus; polliniis ovalibus juxta medium stipiti brevi flexuoso affixis adscendentibus.—Ovalau (U. 8. 
Expl. Exped.). 
“Stioma depressed. Immature follicle smooth, short, acuminate-rostrate. Probably this is a con- 
gener of Endlicher’s Hybanthera biglandulosa, the pollen-masses of which are probably not so pendulous 
as represented, The structure of the andrecium is very similar, but the coronal appendages are trans- 
versely dilated at the base, thence gradually tapering to an acute summit, the whole perfectly adnate to the 
back of the anther. In Dr. Wight’s Iphisia (7. Iphisia and 7. Govanni, Deeaisne) I find the same struc- 
ture, the fleshy appendages equally adnate and laterally compressed.”—A. Gray, l. ¢. 
1I. Gymnema, R. Brown in Trans. Wern. Soe. vol. i. p. 83; Decaisne in DC. Prod. vol. viii. 
p. 621. Calyx 5-partitus, scpalis erectis, ovatis, parvulis, puberulis, marginibus scariosis. Corolla 
rotata 5-fida, laciniis calyeem vix superantibus ssepius 3-angularibus, parvis, crassiusculis, cestivatione 
contortis, fauce squamulis dentibusve crassiusculis sinubus oppositis in lineas duplices pilosas tubo 
introrsum desinentibus. Corona staminea nulla, Antherze membrana truncata terminate. Masse 
pollinis erectee, basi affixee, ovoidez, Folliculi leaves. Semina plana, margine tenuiori cincta, co- 
mosa.—Frutices volubiles vy. erectee ; foliis oppositis, coriaceis, subtus tomentosis ; umbellis interpetio- 
laribus, seepius geminis, cymeeformibus, subsessilibus, parvis, multifloris; floribus parvis, congestis, 
fiavescenti-viridibus. 
_A. Gray thinks that to * Gymnema both Gongronema and Bidaria must doubtless be restored. The 
wstivation of the corolla, said by Blume to be valvate, is conyolute, as described by Decaisne, in all the 
species I have examined, but in most of them the margins so slightly overlap that the ewstivation might 
readily be taken for valvate.”’ 
1, G. subnudum, A. Gray in Proceed. Amer. Acad. vol. y,; volubile, undique glabellum ; foliis 
membraneis ovato-lanceolatis seu ovato-oblongis basi rotundatis y. subcordatis; pedunculis petiolum 
adsequantibus ; umbella seepius bifida; corolla rotata 5-partita imberbi squamulis fere obsolctis sinu- 
bus instructa; gynostegio brevissimo.— Mountains of Macuata (U. 8, Expl. Exped.), 
2, G. stenophyllum, A, Gray in Proceed, Amer, Acad. vol. vy. (Tab. XXXI.); fruticosum, 
erectum (3-6 ped.), ramosissimum, fere glabrum; foliis coriaceis linearibus basi attenuatis margini- 
bus revolutis, costa subtus pilosula ; pedunculis axillaribus brevissimis; corolla rotata alte 5-fida in- 
appendiculata, lobis extus glabris intus tenuiter barbatis; gynostegio brevissimo; polliniarum stipiti- 
bus gracilibus spiraliter contortis—Nomen vernac, Vitiense, “ Yauyau.”—On the barren hills of 
Macuata,Vanua Leyu (Seemann! n, 322, U. 8. Expl. Exped.). 
nf In habit resembling G. erecta, F. Muell., from New Holland, with whieh it may prove identical. 
“The follicles are slender, alinost as much so as the leaves, and smooth. The pollinia accord with the 
