330 PENTANDRTA. PENTAGYNIA. linum. 



^ Schult. Gen. 1260. Nat. Ord. Caryophylle^ 

 Juss. LiNEiE Z)^ Cand. Flax. 



1. L. virginimwm L. : stem paniculate at the summit j 

 radical leaves obovate and spathulate ; cauline ones lanceo- 

 late ; flowers remote, alternate ; segments of the cal}x acute. 

 Will d. Spec. 1 538. M i c h. Fl. II. p. 36. Pursh FL 

 J. p. 210. Elliott Sk. h\>.^l. Walt, Car. p. 117: 

 Roem, ^ Schult. YI. p. 749. G r o n. Firg. 35. 



Root annual. Seem a foot and a half or 2 feet high, erect, very 

 slender, smooth, simple, except towards the summit, which is 

 more or less branched in a paniculate manner. Leaves scat- 

 tered, alternate, or rarely opposite, about an inch long, smooth j 

 those on the upper part of the stem very acute. Flowers very 

 small, on pedicels about 2 lines long, secund. Segments of 

 the calyx broad-ovate, acuminate, carinate. Petals pale yel- 

 low, ovate. Cafxsule depressed, globose. 



Hab. On rocky hills ; common. July — August. 



2. L. usiiaiissimum L. : segments of the calyx ovate, 

 acute, 3-uervcd ; petals crenate ; leaves lanceolate, alternate ; 

 stem subsolitary. W i 1 1 d. Spec. I. p. 1536. Smit h Fl, 

 Brit. I. p. 342. Ey}g. But. t. 1357. Pursh FL I. p. 210o 

 Roem. <^ Schult. VI. p. 736. 



Root annual, fibrous. Stem a foot and a half high, simple be- 

 low, branched above. Leaves numerous, very acute. Floivers 

 pedicellate, large. Petals obovate, crowded or crenate. Sta-' 

 mens united at the base. Catsule acuminate. 



Hab. In fields and pastures ; common. June — July. Intro- 

 duced. Common Flax, 



223. SIBBALDIA. L. 

 Calyx 10-clfcft, with the alternate segments nar- 

 rower. Petals 5, inserted on the calyx. Styles pro- 

 ceeding laterally from the germen. Seeds 5, clustered 

 in the bottom of the ciilyx. Gen. pi. 5c)6. JWi 1 1. 

 Gen. I. p. 207. Juss. p. 337. La?n. III. t. 

 CCXXI. Jioem. W Schult. Gen. 1266. Nat. 

 Ord. Ro5ACEJE .luss. 



S. procximbens L. : leaves ternate ; leaflets cuneate, tri- 

 dentate, smooth above, hairy beneath; flovv^ers corymbed ; 

 petals lanc(^olate, acute, about as long as the calyx. Willdo 

 Spec. I. p. 15G7. Sm i t h FL Brit. 1. p. 345. Eng. Bot. 

 t. 897. Pursh FL\.T^.21U Roem. 4r Schult. \\. 

 p. 768. 



A small procumbent plant, with the habit of Potentilla triden- 



tata. Floivers yellow. 

 Hab. On the high mountains of Canada and Vermont. Pursh. 



