1893.] D. Praia — A review of the genus Colquhounia. 35 



Sclilechtendal's C. mollis, and to give specific rank to that very distinct 

 new form collected in Northern Burma by Gratacre and in South China 

 by Henry. 



It is remarkable that the character from tomentum which has 

 been mainly relied upon — and with rather unsatisfactory results — in 

 diagnosing the various species, sbould still prove the most effective and 

 reliable. It has, however, to be noted that hitherto only the degree of 

 tomentum and not its nature has been referred to, the difference between 

 the simple hairs of the C. elegans series and the stellate hairs of the C. 

 coccinea series of forms having been overlooked.* 



COLQUHOUNIA Wall. 

 Nat. Ord. LABIATAE. 

 Tribe. STACHTDEAE. 

 Tall, robust, rambling herbs with rounded branches. Leaves ovate, 

 margins dentate or crenate, petioled, acute or acuminate, base cuneate, 

 rarely truncate or cordate, tomentose, as are the branches, with stellate 

 or simple hairs. Whorls axillary, or in dense or lax-flowered spikes 

 or racemes, of pink, orange, or scarlet, concolorous or spotted flowers. 

 Calyx, distinctly 10-nerved, equally 5-toothed, throat naked. Corolla 

 tube incurved not annulate, throat inflated ; galea entire or more rarely 

 notched, shorter than the almost equally 3-lobed lower-lip. Stamens 

 4, ascending under the upper lip, the lower pair longer ; anthers con- 

 niving in pairs, the cells divaricate, confluent. Disc equal ; style shortly 

 2-fid with subequal lobes. Nutlets oblong, compressed, with the tip pro- 

 duced as a submembranous wing. 



1. Colquhounia coccinea Wall., ampl. 



Tomentum of stellate hairs on stems and leaves ; hairs on the 

 corolla many-celled, glandular at the tip ; wings of nutlets sub-lacini- 

 ate, not longer than body of nut ; calyx teeth triangular. 

 Himalaya : Indo-China. 



vae. a. typica ; leaves dentate-crenate, tomentum white, 

 usually sparse, ultimately almost disappearing ; flowers 

 large, pink or red. C. coccinea Wall., Trans. Linn. Soc, 

 xiii, 608 (1822); Tent, Mor. Nap., i., 13, fig. excl. (1824); 

 Cat. n. 2085/1 (1829) ; Benth., Bot. Reg., xv, sub' 1292 

 (1829) ; Lab. Gen. & Sp. 644 (1=34) : DC. Prodr., xii, 

 457 (1848) ; Walp., Ann., iii, 268 (1852) : Hook, f., Flor. 



* The co-ordinate difference in the nature of the glandular hairs on the corolla, 

 which is as striking, was pointed out to the writer by his friend Mr. Briihl, who 

 kindly went over the forms after they had been sorted out. 



