CONVOLVULACEAE. 



Determined by Camillo Schneider. 



CONVOLVULUS L. 



Convolvulus Ammanii Desrousseaux in Lamarck, Encycl. Meth. 

 in. 549 (1791). — Choisy in De Candolle, Prodr. IX. 402 (1845).— 

 Ledebour, Fl. Ross. III. pt. 1, 90 (1847). — Hance in /owr. Bot. XX. 

 292 (1882). — Hemsley in Jour. Linn. Soc. XXVI. 165 (1890). 



Western Szech'uan: valley of Hsao-chin Ho, near Monkong 

 Ting, rare, alt. 2400 m., June 1908 (No. 2288; forming dense tufts, 

 flowers white, tinged pink). 



PORANA Burm. 



Porana sinensis Hemsley in Jour. Linn. Soc. XXVI. 167 (1890). — 

 Diels in Bot. Jahrh. XXIX. 544 (1900). 



Vi^estern Hupeh: Changlo Hsien, side of streams, alt. 600 m., 

 June 1907 (No. 3221; climber 3-5 m., flowers purple). Western 

 Szech'uan: Shih-ch'uan Hsien, thickets, alt. 1000-1300 m., August 

 1910 (No. 4625; climber 2.5-3 m., flowers purple). Southeastern 

 Szech'uan: Nanch'uan, "Kung chia p'ing," August 1891, A. von 

 Rosthorn (No. 509; forma affinis ex Diels) . Yunnan: Szemao, moun- 

 tains to west, alt. 1600 m., A. Henry (No. 11892; large climber, blue 

 flowers); Mengtsze, mountains, alt. 1600 m., A. Henry (Nos. 10715% 

 10715''; large climber, flowers blue). Kwangtung: without precise 

 locality, C. Ford (No. 290, type, ex Hemsley). 



The specimens of Wilson and Henry before me seem to represent a form of this 

 species, the type of which I have not seen ; the leaves arc less pubescent and almost 

 glabrous when the fruits are ripe. The size of the flowers seems to be rather vari- 

 able; Hemsley says they are about an inch broad, which is the size of the flowers of 

 Henry's No. 11892, while on Wilson's No. 3221 they are only 2 cm. broad and in 

 No. 4625 they seem to be even a little smaller. In the form mentioned by Diels 

 the flowers measure about 2 cm. in width. Otherwise I cannot detect any good 

 character on which to base even a variety. On Wilson's No. 4625 the corolla is 

 sparsely hairy within below the lobes, while on No. 3221 the flowers are glabrous 

 within except the top of the ovary and the lower part of the style. Hemsley did 

 not see the fruits, and it may happen that the fruits of the true P. sinensis have 3 

 of the sepals enlarged, as is the case in P. spectabilis Kurz, which has much larger 



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