214 CISTACEAE 



1. HELIANTHEMUM Pers. 



I'etaliferous flowers 5-12, in terminal clusters: capsules of the petaliferous 

 flowers 3-4 mm. long, little if at all overtopped by the later axillary 

 branches : capsules of the apetalous flowers about i mm. in diameter. 



I. H. majus. 



Petaliferous flowers solitary or rarely 2 : capsules of the petaliferous flowers 

 6-8 mm. long, much overtopped by the later axillary branches : capsules 

 of the apetalous flowers nearly 4 mm. in diameter. 2. H. Canadense. 



1. Helianthemum majus (L. ) B.S.P. Hoary Frostweed. (Man. 

 p. 630; I. F. /. 2470.) In dry soil, N. S. to S. Dak., Neb., N. C. and 

 Tex. — Pennsylvania : Bucks ; Montgomery; Huntingdon. 



2. Helianthemum Canadense (L.) Michx. FrosT-wort. (Man. p. 

 631 ; I. F. y^ 24JI.) In dry rocky or sandy soil, Me. to Ont., Wis., N. 

 C. and Ky. — Pennsylvania : Monroe ; Northampton ; Bucks ; Craw- 

 ford ; Delaware ; Lancaster ; Chester ; Allegheny ; Erie. 



2. LECHEA L. 



Leaves of the basal shoots with oblong or ovate blades not over thrice as long 

 as broad. 

 Outer sepals surpassing^ the inner. i. L. minor. 



Outer sepals shorter than the inner or about equalling them. 



Capsules oblong : pedicels 2-4 mm. long. 2. L. racemtilosa. 



Capsules globular : pedicels about i mm. long. 

 Stem or branches erect, villous. 3. L. villosa. 



Stem or branches ascending or spreading, canescent. 4. L. viaritinia. 

 Leaves of the basal shoots with linear or lanceolate blades over thrice as long 

 as broad. 

 Capsules obovoid, i mm. thick: panicle with ascending or spreading branches : 



flowers short-pedicelled. 5. L. Le^^etlii. 



Capsules globular, 2 mm. thick : panicle with erect branches : flowers 

 slender-pedicelled. 6. L. intermedia, 



1. Lechea minor L. Thyme-lEaved Pin- weed. (Man. p. 632 ; I. 

 F.y. 24j§.) In dry open grounds, eastern Mass. to Mich., Fla. and La. 

 — Pennsylvania : Bucks, Bristol. 



2. Lechea racemulosa Michx. OblonG-FruiTEd Pin-weed. (Man. 

 p. 632; I. F. f. 2476.) In dry sandy and rocky soil, eastern Mass. (?), 

 N. Y. to Ind., and Via.— Pennsylvania : Northampton; Bucks; 

 Chester ; Lancaster ; Huntingdon ; Franklin ; Westmoreland ; 

 Allegheny. 



3. Lechea villosa Ell. Large or Hairy Pin-weed. (Man. p. 632 ; 

 I. F. /. 2477.) In dry soil, Mass. and Vt, to southern Ont., Neb., Fla. 

 and Tex. — Pennsylvania : Northampton ; Bucks ; Delaware ; Ches- 

 ter ; Monroe ; Lancaster ; Erie, Presque Isle. 



4. Lechea maritima Leggett. Beach Pin-weed. (Man. p. 632 ; I. 

 F.y. 247S.) Sands of the seashore and in sandy pine barrens, Me. to Ga. 

 Also in the White Mts., N. H. — Pennsylvania : Bucks, Bristol ; MON- 

 TOUR ; Luzerne ; Columbia ; Lancaster ; Delaware. 



5. Lechea Leggettii Britt. & HoU. Leggett's Pin-weed. (Man. p. 

 633 ; I. F. y] 24S0.)' In open places, Mass. to Ind. N. C. and Ala. — Penn- 

 sylvania : Monroe. 



