ASCLEPIADACEAE. — CYNANCHUM 345 



type ex Hemsley) ; Hsing-shan-Hsien, thickets, alt. 600-900 m., Sep- 

 tember 1907 (No. 2250; climber 1.2-1.8 m., flowers white). 



In Henry's No. 2755 in the Gray Herbarium the inflorescences are very few flow- 

 ered; otlierwise there is no difference between this co-type and Wilson's specimens. 

 I doubt if our plant belongs to Holostemma at all, the type of the genus being H. 

 annularis K. Schumann (in Engler & Prantl, Nat. Pflanzcnfam. IV. Abt. 2, 250, 

 fig. 71 j-K [1895]. — Asclepias annularia Roxburgh, Fl. Ind. ed. 2, II. 37 [1832]). 

 Roxburgh mentions as synonym "Ada-kodien Rheed. mal. 9, t. 7," which is also 

 cited by R. Brown in describing his new genus. There is a plate in Wight, Icon. 

 Ind. Orient. II. t. 597, under the name of Holostemma Rheedii Sprengel. 



CYNANCHUM L. 



Cynanchum decipiens Schneider, n. sp. 



Suffrutex scandens ad 1.2-1.8 m. altus; ramuli teretes, flavo- 

 brunnescentes, unifariam puberuli, ceterum fere glabri, remote foliati. 

 Folia membranacea, ovato-lanceolata, basi subauriculato-cordata, 

 apicem versus sensim angustata, acuminatissima, utrinque sparse 

 puberula, subtus paulo pallidiora, majora 5-8 cm. longa, ad basim 

 2-4 cm. lata; petioli ad 2 cm. longi, superne sulcati, laxe puberuli, ad 

 basim folioli glandulosi. Cymae umbelliformes, ad 25-florae, pedunculo 

 puberulo 4-9.5 cm. longo suffultae; flores purpurascentes, aperti, 

 circiter 7 mm. diametientes; pedicelli filiformes, plus minusve unifariam 

 puberuli, basi bracteis parvis lineari-lanceolatis acutis puberulis in- 

 structi, ad 18 mm. longi; calycis segmenta fere libera, lanceolata, 

 acuta, intus glabra, extus sparse pilosa, margine ciliata, circiter 2 mm. 

 longa, intus basi inter se squamulis circiter 3 (toti circiter 15) minimis 

 instructa; corolla subrotata; lobi patentes (v. reflexi?), oblongi, sub- 

 acuti, circiter 4 mm. longi, extus glabri, intus margine excepto 

 albo-puberuli ; corona gynostegio brevior, basin appendicis antherarum 

 attingens, lobis 5 obtusis distinctioribus intus appendice ligulato-trian- 

 gulato iis simili et paulo breviore medio ornatis, inter lobos iterum 

 brevius lobulato-plicata; antherae rhomboideae; subquadratae, mar- 

 ginibus cartilagineis, apice appendice hyahno albo subacute in caput 

 stigmatis paulo incurvo coronatae; pollinia pendentia, retinaculo paulo 

 longiora, translatoribus versus pollinia dilatatis; stigma basi 5-angu- 

 lum, convexum, obscure bilobum, Folliculi singuli (an semper?), 

 oblongi, basi brevius et apicem versus longe attenuati, subglabri, 

 ad 11 cm. longi et versus medium 1.2 cm. crassi, olivacei, purpuras- 

 centi-striati; semina oblongo-spathulata, basi dilatata, rotundata, den- 

 ticulata, versus apicem angustata, apice coma sericea fere 4-plo 

 longiore coronata, circiter 7 mm. longa, plano-compressa. 



