336 WILSON EXPEDITION TO CHINA 
INDIA. Sikkim: “reg. subtrop. alt. 4-6000 ped.," J. D. Hooker (type; 
** Rhynchospermum 5, Herb. Ind. Or. Hook. f. et T."). 
The co-type of this species in the Gray Herbarium agrees well with the Chinese 
Specimens mentioned above, but it is strange that Hooker in his description says: 
“ ovary pubescent, follicles tomentose,” while in all the specimens before me there is 
not the slightest indication of any pubescence on the ovaries or fruits. It might be 
possible that there are two different plants mixed under the type specimens, or it 
was a mistake of Hooker's, who also describes the mouth and throat of the corolla 
as glabrous, while in the specimens before me both are distinctly pubescent. I 
suggest that the fruits described by Hooker do not belong to a T'rachelospermum at 
all. See also my remarks under subgen. Azillanthus. 
CLAVIS SPECIERUM GENERIS TRACHELOSPERMI. 
Ovarium fruetusque glaberrimus. Squamae calycis distincti, 10 (v. plures?), 2 
ante segmentum quodque insertae. 
Tubus corollae apice dilatatus; stamina in parte dilatata inserta; styli elongati. 
Valvae fructuum (an semper?) tenues. 
Subgen. 1. EUTRACHELOSPERMUM. 
Alabastra satis longe acuminata, parte loborum convolutorum quam pars 
superior dilatata tubi plus minusve duplo longiore. Antherae e fauce 
glabra paulo exsertae. 
Sepala circiter 3.5 mm. longa, apice plus minusve patula. 
Corollae tubus circiter 8-9 mm. longus. Folia vix ad 9 cm. longa et 3.5 em. 
cw tne c np M S E 1. T. divaricatum. 
1 As is the case with many other genera of the Apocynaceae it is very difficult 
to limit properly the genus Trachelospermum. After a careful examination of all 
the material at my disposition and of the description given by authors I think it 
best not to include the following plants referred to this genus: : 
1. T. difforme Gray, Syn. Fl. N. Am. II. pt. 1, 85 (1878), and the apparently 
very different T. stans Gray in Proc. Am. Acad. XXI. 394 (1886) (see the specimens 
collected by E. Palmer, No. 724, at Chapala in 1886, and of C. G. Pringle, No. 8743, 
at Monterey, Mexico, 1903). Both may be kept in the genus Secondatia A. DC. 
2. T. verrucosa Boerlage, Handl. Fl. Nederl. Ind. II. 400 (1899), which is the 
same as T'riadenia verrucosa Miquel, Fl. Ind. Bat. II. 459 (1856) and referred to 
our genus by Bentham & Hooker. I have not seen a specimen. 
3. T. Bowringii Hemsley in Jour. Linn. Soc. XXVI. 99 (1889), which was first 
described as Parechites Bowringii Hance in Jour. Bot. VI. 299 (1868). I know 
this plant only from Hance's description, according to which, if correct, I do not 
believe that the plant is a Trachelospermum in our sense. : 
4. T. philippinense Elmer in Leaft. Philipp. Bot. II. 488 (1908), of which I have 
seen the type (A. D. E. Elmer, No. 9135, Lukban, 1907). The author says “ near to 
T. fragrans Hook. f.,” but, as he states himself, the very short corolla-lobes "s 
“ slightly twisted to the right in the bud, but reflexed to the left in the anthesis. 
Besides this there are only five scales of the calyx and the inflorescence is different. ; 
It certainly has no relationship with T. fragrans or any other Trachelospermum. 
. 5. T. Cavaleriei Léveillé, Fl. Kouy-Tchéou, 31 (1912), of which I saw some leaves, 
is no Trachelospermum. T. Esquirolii Léveillé, 1. c. 32, is a Melodinus, near to 
M. monogynus. T. Navillei Léveillé, l. c., is the same as Aganosma cymosum, 
var. elegans Hooker f. 
