PLATE 2251, 
BRAYA UNIFLORA, Hook. f. et Thom. 
Crucirerz. Tribe CamMeELINEg. 
B. uniflora, Hook. fil. & Thoms. in Journ. Linn. Soc. v. 168; 
humilis, dense cespitosa, glaberrima, collibus crassis petiolorum 
tetragono, ovulis in utroque loculo e. 5-6, siliquis (in spp. Thomsonianis) 
Iinearibus compressiusculis, suturis longitudinaliter sulcatis, valvis 
carnosulis, septo completo, seminibus c. 10 uniseriatis ellipsoideis 
leviter compressis. 
Has. Western Tibet, Nubra, 15,000-17,000 feet, Thomson; Yarkand 
pl eating Henderson ; Tibet, 17,000 feet, in ‘sandy gravelly soil,’ 
Thorold. 
Folia pollicaria. Silique 4-6 lin. longe. 
This curious little plant, of which a good flowering specimen has 
recently been communicated to the Kew Herbariam by Surgeon- 
Captain W. G. Thorold, is the only member of the large and familiar 
Order Cruciferse—so far, at least, as my experience goes—in which we 
have true cohesion of the sepals. The cohesion is not always equal all 
round, it is true, but it is singular that in an Order of considerably 
over one thousand species, in a very large number of which the 
sepals are erect and closely applied in their imbricate wstivation, a 
ig a gamosepalous calyx should not be more frequent.— 
Fig. 1. Flowering branch. 2. Flower. 3. Petal. 4. Stamens and pistil. 5. Ovary 
after fall of petals and stamens. 6. Fruit... 7. Same laid open, Ad/ enlarged. 
SER. 1V. VOL, TI. PART III. 
