352 WILSON EXPEDITION TO CHINA 
ad 5 mm. longi, plerique glabri, basi bracteis parvis linearibus fere 
glabris instructi; alabastra oblongo-subacuminata, circiter 5 mm. 
longa, lobis sinistrorsum convolutis; calycis segmenta fere libera, 
lineari-lanceolata, acuminata, pleraque glabra, 1-1.5 mm. longa, 
intus basi interdum inter se squamula una minima instructa; corollae 
lobi fere ad basim liberi, anguste lanceolati, acuti, 3-4 mm. longi, 
glabri, saepe paulo contorti; gynostegium calyci aequilongum, sessile; 
coronae foliola ut videtur minima, ad basim gynostegii affixa, 
breviter gibbosa sed in floribus siccis difficile certe recognoscenda; 
antherae breves, subquadratae, appendice brevi hyalino rotundato in 
stigma inflexo coronatae; pollinia ut videtur erecto-patentia, circuitu 
oblongo-subrotunda, translatoribus tenuibus curvatis patentibus brevi- 
bus; retinacula fere rotunda, polliniis paulo minora; stigmatis caput 
fere planum, medio paulo depressum. Folliculi ignoti. 
Western Szech'uan: Wénch'uan Hsien, Min River valley, arid 
places, alt. 1300 m., May 3, 1908 (No. 2253; shrub 10-30 cm. tall). 
This plant looks like a Thesium and also somewhat resembles Cynanchum sibiri- 
cum R. Brown, which has longer and broader leaves and shortly pedunculate inflores- 
cence. On account of the very small polliniae which are included in the upper part 
of the anthers I refer this species to Tylophora without being able to indicate 
its relationship to any species hitherto described from eastern Asia or India. 
‘The shape of the gynaeceum and especially of the anthers is somewhat similar to 
those of T. cuspidata Zippel as represented by Decaisne on t. 10, fig. ein Ann. Sci. 
Nat. sér. 2, IX. (1838), but otherwise this species has very different leaves, in- 
florescence and corolla-lobes. The corona seems to be very small, and it is most diffi- 
cult to ascertain its exact form in dried specimens. 
DREGEA E. Mey. 
Dregea sinensis Hemsley in Jour. Linn. Soc. XXVI. 115 (1889). — 
K. Schumann in Engler & Prantl, Nat. Pflanzenfam. IV. Abt. 2, 293 
(1895).— Diels & Schlechter in Bot. Jahrb. XXIX. 544 (ut videtur pro 
parte) (1900). — Diels in Not. Bot. Gard. Edinburgh, VII. 357 (Pl. 
Chin. Forrest.) (1913). 
Western Hupeh: north and south of Ichang, alt. 30-900 M., 
cliffs, ete., May 1907 (No. 682, climber 1.5-2.5 m. tall, flowers white 
or pink); same locality, etc., November 1907 (No. 682°; fruits); same 
locality, A. Henry (No. 3554; also probably No. 1767, type ex Hems- 
ley); without exact locality, A. Henry (Nos. 6164, 6387; Hemsley vis 
mentions as co-types Nos. 3005, 3125, 3868). Western Szech * 
uan: Mupin, alt. 1300-1600 m., thickets, June 1908 (No. 6825; climber 
1.5-2.5 m. tall, flowers pink); Mao-chou, arid places, alt. 1300-1600 
