XXXVII. 2. PIN-WEED. 517 



The Canada Sun-Rose. H. Canadensc. Michaux. 

 Figured in Sweet's Cistacea, Plate 21. 



Flowers of two kinds; the primary or terminal, large and 

 petaliferous flowers few or solitary, on peduncles scarcely longer 

 than the flower, the petals about twice the length of the calyx ; 

 secondary flowers axillary, very small, nearly sessile, solitary 

 or somewhat clustered, on short, leafy branches, the petals very 

 small or none, and the outer sepals usually wanting; leaves 

 oblong or somewhat lanceolate, with revolute margins, and, as 

 well as the sepals, and often the branches and peduncles, canes- 

 cently tomentose. — T. Sf G., Flora, I, 151. 



An erect, downy plant, about a foot high, found in dry, sandy 

 places, among rocks, and remarkable for its flowers of two 

 kinds. The earliest, which appear in May and June, are ter- 

 minal or lateral, solitary, and look like a miniature yellow rose, 

 with 3 or 5 wedge-shaped petals, and many stamens inclined 

 to one side ; the 2 exterior sepals are linear, the 3 interior broad- 

 oval, pointed, concave, downy without. The individual flowers 

 are fugacious, but succeed each other from day to day. The 

 later flowers as above described. 



There are two marked varieties in the neighborhood of Bos- 

 ton : — The one is smoothish below, with hair in scattered tufts, 

 stem very slender, leaves rather rigid and smooth above ; flowers 

 solitary, in the angle of the upper leaves, appearing in May and 

 June : H. Canadinse of Pursh. 



On the other, the hairs are short, densely tufted, the stem 

 short, leaves downy or dusty on both surfaces ; flowers in ter- 

 minal corymbs, succeeding each other in June and July: H. 

 ramuliflorunij Pursh ') 



XXXVII. 2. PIN-WEED. LECHE^A. L. 



An American genus of a few species of perennial, much- 

 branched herbs with woody roots, and small, brownish-purple 

 flowers in racemes or panicles ; and entire, alternate, opposite or 

 whorled leaves, without stipules. The sepals seem to be 3, the 

 2 exterior being very narrow and bract-like ; the petals are 3, 



