346 WILSON EXPEDITION TO CHINA 



Western Szech'uan: Wen-chuan Hsien, dry and rocky valleys, 

 alt. 1300-2300 m., June and November 1908 (No. 1239, type; climber 

 1.2-1.8 m., flowers purple; with flowers and ripe fruits). 



According to the description and figures given by Maximowicz in Bull. Acad. 

 Sci. St. Petersbourg, XXIII. 372 (1877), this species seems to be closely related to 

 C. acutum Linnaeus, var. longifolium Ledebour, of which I have not been able to 

 see good material. It also resembles the Chinese species of the sect. Endotropis, 

 but these have a different corona, which in our species looks somewhat hke that 

 represented in Maximowicz's fig. 10. 



Cynanchum (§ Endotropis) aiiriculatum Royle in herb, apud Wight, 

 Contrib. Bot.Ind. 58(1834). — Hooker f., Fl. Brit. Ind. IV. 25 (1883).— 

 Hemsley in Jour. Linn. Soc. XXVI. 105 (1889). — Diels & Schlechter 

 in Bot. Jahrh. XXIX. 541 (1900). 



Endotropis auriculata Decaisne in De Candolle, Prodr. VIII. 546 (1844). 



Western Hupeh: Changyang Hsien, thickets, alt. 650-900 m., 

 August 1907 (No. 2249; climber 3 m. tall, flowers white); Ichang, A. 

 Henry (No. 2481); without precise locality, A. Henry (Nos. 2196, 

 4271, 6546). Kiangsi : Kuling, common, alt. 1100 m., July 30, 1907 

 (No. 1533; climber 1.8 m. tall, perianth green, corona waxy-white). 



In the plant from Kuling the flowers are a little smaller than in the other 

 specimens. 



Cynanchum (§ Endotropis) amphiboliun Schneider, n. sp. 



Suffrutex scandens ad 3 m. altus; ramuli teretes, unifariam puberuli. 

 Folia ovato-lanceolata, basi auriculato-cordata, apicem versus satis 

 sensim acuminata, fere caudata, utrinque sparse puberula v. sub- 

 glabra, subtus pallidiora, 5-10 cm. longa et 3-5.5 cm. lata, ad in- 

 sertionem petioli superne glandulosa; petioli 2-6 cm. longi, superne 

 sulcati et sparse pilosi. Cymae 10-20-florae, umbelliformes, pedunculis 

 2.5-4.5 cm. longisut pedicelli ad 2 cm. longi filiformes unifariam pilosulis 

 suffulti. Flores purpurascentes, aperti ad 0.8-1 cm. diametientes; caly- 

 cis segmenta ovato-lanceolata, acuminata, margine ciliolata, 2-2.5 mm. 

 longa; corolla subrotata; lobi oblongi, subacuti, 3.5-4.5 mm. longi, 

 intus puberuli, plerique reflexi; corona gynostegio aequilonga, corollae 

 lobis circiter duplo brevior, laciniis oblongis obtusis intus medio ap- 

 pendice ligulato-triangulari foliolum aequante instructis extus versus 

 basim ut in C. auriculato Royle constructis; antherae rhomboideo- 

 subquadratae, marginibus cartilagineis, apice appendice albo hyalino 

 subobtuso in caput stigmatis planum 5-lobatum medio bilobulatum 

 incurvo praeditae; pollinia retinaculo oblongo-rhomboideo satis magno 



