LABIATAE. 



Determined by Alfred Rehder. 



COLQUHOUNIA. 



Colquhounia Seguinii Vaniot in Bull. Acad. Intern. Geog. Bot. XIV. 

 165 (1904). 



Colquhounia coccinea Hemsley in Jour. Linn. Soc. XXVI. 299 (non Wallich) 



(1890). 

 Colquhounia elegans, var. pauciflora Prain in Jour. As. Soc. Beng. LXII. 38 



(1893). — Dunn in Not. Bot. Card. Edinburgh, VI. 179 (1915). 

 Colquhounia pauciflora Prain in Jour. As. Soc. Bengal, LXII. 38 (pro synon.) 



(1893). 

 Colquhounia decora Diels in Not. Bot. Gard. Edinburgh, V. 240 (1912). 



Western Hupeh: Ichang and immediate neighborhood, A. /fenry (No. 3334). 



Prain and Dunn consider this a variety of C. elegans WalUch, but it differs con- 

 siderably from all other species of the genus in the shape of the corolla, which has a 

 short wide tube scarcely twice as long as the long upper lip, while in C. elegans and 

 the other species the tube is at least three times as long as the comparatively short 

 upper lip. C. Seguinii differs further from the other species in its glabrescent stems 

 and leaves. Vaniot describes the calyx also as glabrous, but in Henry's specimens it 

 is pubescent, as it is described by Diels in his C. decora. Vaniot possibly overlooked 

 the very fine and close pubescence. I have no doubt that Dunn, who had seen the 

 types of Vaniot's, Prain's and Diels's plants, is right in uniting them. A more pu- 

 bescent form occurs in western Szech'uan and this may be separated as a distinct 

 variety. 



Colquhounia Seguinii, var. pilosa Rehder, n. var. 



A typo recedit ramis dense crispulo-pilosis et fohis supra satis 

 dense et subtus praecipue ad costam nervosque longe pilosis. 



Western Szech'uan: Wa-shan, thickets, alt. 1200-1500 m., 

 October 1908 (No. 3530; sub-shrub 1.5 m., flowers reddish). 



Wilson's No. 3580 differs from Henry's No. 3334 chiefly in the pilose pubescence 

 of the stem and of the leaves; the lateral flowering branchlets are shorter, measuring 

 from 3 to 8 cm. in length; the corolla is from 20 to 23 mm. long, with the tube from 

 12 to 13 and the upper hp from 8 to 10 mm. long. These measurements agree well 

 with those given by Diels for his C. decora. 



In Yunnan the following two species have been collected. 



Colquhounia elegans WalUch, var. tenuifiora Prain in Jour. As. Soc. Bengal, 

 LXII. 38 (1893). — Dunn in Not. Bot. Gard. Edinburgh, VI. 179 (1915). 

 C. elegans Kurz, Forest Fl. Brit. Burma, II. 278 (non WalUch) (1877). 

 C. tenuifiora Hooker f., Fl. Brit. Ind. IV. 674 (1885). 



C. martabanica Kurz mss. ex Prain in Jour. As. Soc. Bengal, LXII. 38 (pro 

 synon.) (1893). 



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