Asclepiadaceae Philippinenses. 539 
corolla alte 5-fida, utrinque glaberrima, c. 6 mm longa, lobis oblongis, 
apice breviter excisis, erecto-patentibus; corona poculiformi tenui, apice 
truncata, subinconspicue et obtusissime 5-lobulata, 2 mm alta, antheris 
subquadratis, marginibus cartilagineis basi obtusatis, appendice hyalina 
reniformi, excisa, incurva, polliniis oblique ovoideis, crassiusculis, trans- 
latoribus brevibus obtriangulis, retinaculo rhomboideo, crasso, polliniis 
subaequimagno basi affixis. 
Luzon: Benguet Subprovince, E. D. Merrill, no. 7702 (typus), 
flowering in May 1911; Zambeles Province, Maximo Ramos, no. 5060, 
flowering in Dezember 1907; Bontoc Subprovince, Father M. Vanover- 
bergh, no. 1172, flowering in May-June 1911. 
This very distinct species stands near to C. physocarpum Schltr. but 
is well distinguished by its nearly entire corona. 
4. Cynanchum suluense Schltr., spec. nov. 
Volubile, scandens, ramosum; ramis filiformibus elongatis, flexuosis, 
glabris, laxe foliatis; foliis patentibus patulisve, petiolatis, ovalibus, 
breviter acuminatis, basi leviter cordatis, 6--10 em longis, medio fere 
4—6,5 cm latis, utrinque glabris, textura subcoriaceis, petiolo 
1,7—3 cm longo; inflorescentiis racemosis, dense 10—20-floris, sensim 
evolutis, usque ad 6 cm longis, pedunculo 1—3 cm longo, pedicellis c. 
5 mm longis, minute puberulis; calycis foliolis late ovalibus obtusis, 
minute puberulis et ciliolatis, 1,25 mm longis; corolla alte 5-fida utrinque 
glabra, c. 4,5 mm longa, lobis erecto-patentibus oblongis, obtusis; corona 
poculiformi, margine lobis 5 brevibus et lobis 5- majoribus trilobulatis 
calyei oppositis ornata, c. 4 mm alta, gynostegium bene excedente; gy- 
nostegio sessili; antheris quadratis, appendice hyalina reniformi, ob- 
tusissima, irregulariter subcrenulata. polliniis oblique ovalibus, trans- 
latoribus obtriangulis brevibus, retinaculo ovali crassiusculo polliniis 
paulo minori basi affixis; folliculis inflatis. 
Sulu-Archipelago: Ubian Island, in thickets on seashore, E. D. 
Merrill, no. 5401, flowering in Octobre 1906. 
Also a species of the affinity of C. physocarpum Schltr. but easily 
distinguished by the corona. 
5. Gymnema Piperii Schltr., spec. nov. 
Frutex volubilis, ramosus, alte scandens; ramis flexuosis, elongatis, 
bene foliatis, brevissime tomentellis; foliis ovalibus acuminatis, basi 
rotundatis, superne demum glabratis, subtus brevissime subtomentellis, 
10—13 cm longis, medio fere 4,5—5,5 cm latis, petiolo brevissime tomen- 
tello 1,5—2 cm longo; cymis dense multifloris, unibelliformi-abbreviatis, 
pedunculo pedicellisque subtomentellis 1—1,5 cm lougis; calycis foliolis 
oblongis obtusis, brevissime tomentellis, corolla duplo brevioribus; corolla 
eampanulata, c. 5 mm longa, usque supra medium 5-fida, extus glabra, 
intus coronae carinis 5 anguste linearibus omnino adnatis, pilis suberectis 
distiche barbellatis ornata, caeternum glabra, lobis oblique ovalibus sub- 
truncato-obtusissimis; gynostegio cylindraceo 4 mm alto; antheris qua- 
