ROSACES. 99 



d. crcnata De Cand. : leaves obovate, crenulate at the apex, 

 somewhat pubescent ; corymbs-sessile ; pedicels slightly pubes- 

 cent. <S, crenata Linn. MM. 



HAB. var. b. Dry swamps. Can. and N. Y. May. *?. 

 Pursh. var. d. N. Y. MuhL This species according to De 

 Candolle is very variable, and includes several which have here- 

 tofore been considered distinct. It is sometimes cultivated in 

 our gardens, and was formerly known by the name of Hypericum 

 frutex, but I believe, it has not been found native ; and the only 

 authorities for the varieties here mentioned as American plants, 

 are those above given. 



3. 8. corymbosa Rqf. : leaves oblong-obovate, incisely toothed, 

 pubescent beneath ; corymb terminal, pedunculate, compound, fasti- 

 giate, somewhat leafy ; flowers peritagynous. S. corymbosa Mufd. f 

 #. cliam&drifolia Pursh. ? 



HAB. Alleghany mountains. Rrf. May, June. ^>. Stem 18 

 inches high, slightly pubescent. Leaves nearly smooth above, 

 pale beneath. Flowers pale rose-colour, in a compound pedun- 

 culatecorymb. I adopt the above description, &c. fromTorrey's 

 Flora ; though De Candolle still detains Pursh' s plant as a vari- 

 ety of the Linnsean 8. chamcedrifolia. 



4. S. salicifolia Linn. : stem and peduncles glabrous ; leaves lanceo- 

 late, acutely serrate, smooth ; racemes in dense terminal compound 

 panicles ; flowers pentagynous ; segments of the calyx ovate, spread- 

 ing. S. alba Ekrh. 



HAB. Meadows. Can. to Car. N. to Arc. Amer. July. *>. 

 Stem 2 4 feet high. Flowers white. This species varies some- 

 what in the form of the leaves. 



R. & tomentosa Linn. : stem and peduncles reddish tomentose ; 

 leaves ovate-lanceolate, unequally serrate, densely tomentose beneath ; 

 racemes terminal, compound, crowded ; flowers pentagynous ; seg- 

 ments of the calyx tomentose on the outer side, reflexed ; capsules 5, 

 distinct. 



HAB. In low grounds. Can. to Car. July, Aug. *?, Stem 

 2 3 feet high. Floioers small, pale purple, in a very dense 

 elongated conical raceme. Hard-hack. 



*** Herbaceous. Leaves pinnate. 



6. S. aruncus var. americana Pursh : leaves twice or thrice pinnate, 

 shining ; leafets acuminate, lateral ones lanceolate, terminal one 

 ovate ; spikes slender, in an oblong panicle ; flowers very numerous, 

 trigynous, perfect. 8. aruncus Ett. 



HAB. Mountains. N. Y. to Geor. W. to Miss. June. 1. Stem 

 4-r6 feet high. Flowers white, small, in slender terminal spikes. 



Goafs-beard. 



7. 8. lobata Jacq. : leaves palmate-pinnate, smooth, lower ones bipin- 

 nate ; terminal leafet much larger and 7-lobed ; lateral leafets 3-lobed ; 



