POLYANDRIA MONOGYlfIA 313 



tomontum, within vittose, and hirsute at base ; segments lanceovatc, acute> 

 finally distinct, and somewhat gibbous at base. Petals yellowish white, lance- 

 obiOng, obtuse, c re nate -serrate at apex, nearly twice as long as the calyx ; inner 

 petals linear, often somewhat spatulate, keeled, serrate at summit, nearly as 

 long as the outer ones, attached to a fascicle of stamens at base. Siametis shorter 

 than the petals. Style straight, cylindric, thickish, about as long as the petals, 

 persistent; stigma subcapitals* Nut roundish-oval, about 1 fourth of an inch in 

 diameter, covered with a short dense cinere >us pubescence, buny, or ligneous, 

 mostly 1-celled. and 1-seeded, by abortion. Seed ovoid, 1 to 2 lines in diameter, 

 purplish brown, with a white suberose hilum on one side. 



Hob. Rich woodlands, along Brandy wine : rare. Ft. June. Fr. Sept-^Oct. 



Obs. In some districts of our country, where this tree abounds, the soft white 

 wood is much used in making wooden bowls, and other domestic utensils. The 

 bark, by maceration, separates into fibres, and Is manufactured into a rude cord- 

 age. The inner bark also atfords a mucilaginous liniment, by maceration in 

 cold water, which has been much commended in burns and scalds. This species 

 is sometimes cultivated as an ornamental shade; but it is not so much admired 

 as the European L'uvlen, by reason of its branches being more spreading and 

 straggling. Three other specijs are enumerated in the U. States. 



244. HELIANTHEMUM. Tonrnef. Mat. Gen. ,455. 

 EGr. Helios, the sun, & Anihemon, a flower ; the flowers opening only in sunshine.] 



Calyx with 3 equal sepals, and often with 2 additional exterior ones 

 Which are bract-like, and mostly .sm.iller. Petals 5 (sometimes want* 

 inj), spirally imbricated before they expand, often denticulate at apex. 

 SUffma capitate, sometimes subsessile. Ovary triquetrous. Capsule 

 3-valved, with the dissepiments in the middle of the valves. Seeds 

 angular. 



Herbaceous, orfruUcosc: leaves alternate, or opposite, usually entire, nUkod, 

 or stipul.ir ; flowers terminal, or lateral, subxorymbose, or racemose. Kat. Ord. 

 13-1. Lindl. Cistixeje. 



1. H. canadexse, Mx. Stem ascending ; branches erect, roughish- 



pubescent; leaves alternate, without stipules, lance-oblong, or elliptic* 



lanceolate, acute, hirsutely pubescent, hoary -tomentose befteath, margin 



revolute ; flowers terminal, corymbose, or crowded on short leafy later J 



branches. Beck, Bot. p. 35. 



Also? H. ramuliflorum. Mx. Am. 1 p. 307. and others. 



Cistus canadensis. Wllld. Sp. 2. p. 1199. Alt. Kexv. 3. p 310. 



Biff el. Bost. p. 212. Eat. Man. p. 9G. 



Also? C. ramuliflorum. Eat. Man. p. 97. 



Canadian- HKLiAXTiiEuux. Vulffd— Rock Rose. Frost weed. 



Root perennial. Stem 6 to 12 or IS inches hi-h, herbaceous, slender, rigid, 

 finally almost sufTruticose, often dark purple, clothed with a short stellular or 

 fasciculate pubescence. Leaves about an inch long, and I fourth to 1 third of an 

 inch wide, entire, nearly sessile. Flowers terminal, somewhat corymbose ■ ped- 

 icels hoary-pubescent, solitary in the axils of small bract- 1 ike leaves Cah/x 

 hirsutely pubescent; the 3 principal sepals ovate, short-acuminate, often with a 

 yellow scanous margin o-i one side, the 2 outer ones narrow, linear. Petals 

 yellow, large, cuncate-obovate, emarginate, or rcpand-dcnticulate. Stamens i\c- 

 Alined, style ehort,erect Capmltemwiih, shining, &c*h mnewfiat tfifWtr , 



27 





