ICOSANDUIA. rOLYGYNIA. 311 



Asia (Siberia.) Are there no species in the southern he- 

 misphere? 



550. COMARUM. L. (Marsh Cinquefoi!.) 

 Calix inferior, 10-cleft, 5 of the segn)erits al- 

 ternately sRialler. Petals 5, smaller than the 

 calix. SeedsWf^n, attached to an ovate spongy 

 persistent receptacle, not becoming a berry. 



A marsh plant; with pseudopinnated leaves, stipules 

 growing to the petioles, and sheathing- the stem; pedun- 

 cles few-flowered axillary and terminal. Flowers brown- 

 ish, leaves glaucous beneath. 



Species. 1. C palnstre. In nearly all the western 

 states and territories as far as Louisiana. — A genus of but 

 a single species, common to the whole nothern hemis- 

 phere. 



551. FRAGARIA. L. (Strawberry.) 



Calix inferior, 10-cleft, 5 of the segments al- 

 ternately smaller. Petals 5. Receptacle of the 

 seed ovate and deciduous becoming a berry. 

 Seeds even. 



Creeping herbaceous plants, often sending out filiform 

 radicant stems in all directions which diminish the quan- 

 tity ot flowers and fruit; leaves ternate, very raiely digi- 

 tate, by cultivation sometimes simple; stipules adnate lo 

 the petiole; flowers often terminally cor} mbose, some- 

 times dioicous; receptacle esculent. 



Species. 1. F. resca. v. v. In the state of Ohio near 

 Lake Erie. 2. virg-inuina. 3. canadensis. 



A small but very widely dispersed genus, of which there 

 are 3 species in Europe, 1 in Surinam, 1 in Chili, and 1 at 

 Buenos Ayres, in Soutli America, a yellow flovvered spe- 

 cies has also been recently introduced from India. 



352. CALYCANTHUS. L, (Carolina All-spice.) 

 Calix urceolato, the lower part entire, uj)per 

 part multiftd, squarrose, leaflets colored, peta- 

 loid. Corolla none. Stifles many. Seeds many, 

 naked, smooth and cartilaginous, included in 

 ihe enlarged ventricose and succulent calix. 



Odoriferous and spicy shrubs with opposite and \cTy 

 entire leaves destitute oV stipules, having the upper sor- 



