HuDsoNfA. XIX. CISTACEyh. iol 



1. L.MAJOR. Mic> '. (L. villosa. ^ZZ. 'L.m.inov. Linn.) Larger Pinvxed. 



Erect, hairy; hranuu.^ villous, radical ones prostrate; caulinelvs. ellipti- 

 cal, mucronate, those of tlie radical branches roundisfj, minute; Jl$. small, nu- 

 merous, in fasciculate racemes, somewhat 1-sided. — In dry woods, U. S. and 

 Can. Stem 1^21' high, rigid, brittle, hairy, purple, paniculately branched. 

 Leaves of the stem about 1' long, alternate, opposite, or even verticillate on 

 the prostrate branches, crowded. Flowers brownish-purple, inconspicuous. 

 Capsule roundish, about the size of a large pin-head. Jl. Aug. 



2. L. MINOR. Lam. Smaller Piniveed. 



Erect, smoothish, branched; lis. linear-lanceolate, acute; panicle leafy, 

 its branches elongated ; fls. in nearly simple racemes ; caps, rather large.— Grows 

 in dry, sandy grounds, tJ. S. and Can. Stem 8 — 12' high, often decumbent at 

 base. Stem leaves, G — 10" by 2 — 3", alternate, sparingly ciliate and revolute 

 at the margin, those of the long slender branches minute. Flowers nearly 

 twice as large as in L. major. Petals brownish purple, cohering at apex. Cap- 

 sule also rather larger than in L. major. Jn. — Sept. 



3. L. THYMiPOLiA. Ph. Thymc-lcavcd Pinwccd. 



Frutcscent; sis. decumbent at base, hoary with appressed hairs, very 

 branching and leafy ; rout Its. on the short radical branches, imbricate, ellipti- 

 cal, very small ; cauline Ivs. linear or oblanceolate, often whorled. Sea-coasts, 

 Mass.! to N. J. Stem about If high, rigid and very bushy. Upper leaves about 

 1' long, erect and crowded. Flowers in terminal and axillary clusters, on very 

 short pedicels. Petals brown. Capsules globose. Jl. — Sep. 



2. HELIANTHEiVIUM. 



Gr. I'/Xiof, tlie 9un, a;/So?, a flower. 



Sepals 5, the 2 outer smaller ; petals 5, or rarely 3, sometimes 

 abortive ; stamens 00 ; stigmas 3, scarcely distinct ; capsule triangu- 

 lar, 3-valved, opening at top ; seeds angular. — Fls. yellow. 



l.H. Canadense. Michx. (CistusCanad. WilUI.) Frost Phmt. Rock Rose. 



St. ascending; branches erect, pubescent; Ivs. alternate, without stipules, 

 lanceolate, acute, hairy; pclaiifcrous fls. few, large, terminal, ajycte/M/s ones late- 

 ral solitary or racemose.— In dry fields and woods. Can. to Flor. Stem about 

 If high, at length shrubby at base. Leaves 8—12" long, \ as wide, entire, sub- 

 sessile. Flowers with large bright yellow petals, in a terminal corymb. The 

 axillary flowers later, very small, with very small petals, or apetalous. Sta- 

 mens declinate. Capsule smooth, shining, those of the apet. fls. not larger than 

 a pin's head. Seeds few, brown. Jn. — Sep. 



2. H. coRYMBosuM. Michx. (Heteromeris cymosa. Spach.) 



St. branching, canescent, erect ; Ivs. lance-oblong, canescently tonientosc 

 beneath -'/s. in crowded, fastigiate cymes, the primary ones on elongated, fililorm 

 pedicels, and with jictals twice longer than the calyx; scp. villous-canescent, 

 outer ones linear, obtuse, inner ovate, acute.— Sterile sands, N. J. to Ga. Plant 

 somewhat shrubby, very tomentose when young, at length diftusely branched, 

 about If high. Primary flowers about 1' diam. Secondary ones small, apeta- 

 lous. Jn. — Aug. 



3. HUD SON I A. 



In honor of Wm. Hudson, author of " Flora Aiifflica." 



Sepals 



tals 5 ; 



valved, many-; 



minute exslipulate Ivs. 



1. H. TOMENTOSA. Nutt. Dowvij Hudsonid. 1, ., . , , 



Hoary-tomentose ; /i'.s. ovate, imbricate, acute, shorter than the mtervals 



of the stem; /Z5. subsessile ; pet. obtuse .-Shores of tne ocean and lakes, N. J 



toN. H. ! ami Wi^^.. ^''\ V\^tA c.-r'-'-tii^r' of nuTn.-ro'i<= -l^nrU'r n?r-'nd!ng 



