HELIANTHEMUM umbellatum. 



Umbel-flowered Sun-Rose. 



Sect. I. HALIMIUM. Supra, fol 4. 



* Stylo brevi recto. DC. prodr. 1. p. 267. 



H. umbellatum, caule fruticoso ramoso ; ramis junioribus tomen- 

 toso-pilosis viscosis, foliis sessilibus lineal i-oblongis margine 

 revolutis subviscosis : supra nitidis atroviridibus ; subtus tomen- 

 tosis, bracteis ovatis acutis carinatis, pedunculis unifloris race- 

 moso-verticillatis terminalibus umbeliatis, calycibus trisepalis vil- 

 losis viscosis. 



Helianthenmm umbellatum. DC. prodr. 1. p. 267. Mill. diet. n. 5. 

 Pers. syn. 2. p. 76. Spreny. syst. veg. 2. p. 586. Swt. hort. sub. 

 fond. p. 123. Hort. brit. p. 34. n. 2. 



Cistus nmbellatus. Willden. sp.pl. 2. p. 1190. Hort. Kew. eel. 2. 

 v.3. p. 307. 



Stem shrubby, erect, or more or less spreading, from 

 9 to 18 inches in height, clothed with a hard brown 

 glossy bark, much branched : branches, while young, 

 viscous, clothed with short woolly hairs. Leaves op- 

 posite, crossing each other, sessile, linearly oblong, 

 bluntish, with revolute margins, more or less ciliate, 

 when young, pubescent and viscous : upper side of a 

 dark glossy green ; underneath reticulately veined, and 

 clothed with a dense rusty white tomentum. Flowers 

 white, numerous, terminating the branches in a whorled 

 raceme, and ending in an umbel. Bractes ovate, 

 acute, concave, keeled at the back, membranaceous, 

 dropping off when the flowers expand. Pedicles in 

 whorls round the stem, slender, one-flowered, viscous 

 and pubescent. Sepals 3, cordately ovate, acute, con- 

 cave, villous, about half the length of the petals. Pe- 

 tals 5, of a pure white, with yellow unguis, roundly 

 obovate, or obcordate, imbricate at the base, at first 

 cup shaped, afterwards flat, and at last reflexed. Sta- 

 mens about 16, nearly erect, the outer ones scarcely 



c 



