ADDENDA 



TO THE 



BOTANY OE THE NORTHERN UNITED STATES. 



MARCH, 1863. 



Page 5. 



1\ Anemone Carolinians*, Walt. Stem 3' to 6' high from a small 

 tuber, hairy above, simple, one-flowered, bearing a 3-parted sessile involucre at 

 or below the middle ; its divisions wedge-shaped and 3-cleft; root-leaves 3-parted 

 or divided with the divisions incised, or again 3-cleft and incised; sepals 11-20, 

 linear-oblong, purplish ; head of fruit oblong. — N. and W. Illinois (0. Everett, 

 J. W. Powell, M. S. Bebb, E. Hall, T. J. Hale, &c.) and southward. May. 



P. 38. 



Aiassum caltcindm, L. (For the genus, see Gard. Bot. p. xxiii. Like 

 Vesicaria, but the pod flat.) A low annual, hoary, with linear-spatulate leaves, and 

 racemes of small flowers ; petals pale yellow turning white ; pod orbicular. — 

 Amherst, Mass., Prof. Tuckerman; in grass-lands. (Adv. fromEu.) 



4. Lepididm Draba, L. Perennial; stems 1° high, leafy to the top; leaves 

 oval or oblong, mostly entire, pale, very minutely hoary, the upper partly 

 clasping ; flowers corymbose ; pods heart-shaped, turgid, wingless ; style promi- 

 nent. — Shore of Long Island, N. Y., at Astoria, &c, D. C.Eaton. (Adv. 

 from Eu.) 



P. 39. 



Thlaspi arvense, L. (Pennycress.) (Genus much like Capsella, but the 

 pod winged and the cotyledons accumbent.) Annual, smooth ; leaves oblong, 

 toothed, the upper ones sagittate-lanceolate and clasping; pods half an inch 

 broad including the wings, orbicular-obcordate. — Mackinaw, Michigan, Nuttall, 

 H. Mann, and common in Canada. (Nat. from Eu.) 



P. 57. 



Lychnis yespertina, Sibth. Resembles Silene noctiflora, p. 56, but has 5 

 styles, therefore belonging to Lychnis, and is usually dioecious ; a coarse, hairy 

 biennial, more or less viscid, loosely branched above ; leaves oblong or ovate- 

 lanceolate ; flowers opening in the evening ; petals white or pinkish, 2-cleft, 

 crowned ; fertile calyx ovoid in fruit, with long lance-linear teeth. — Waste 

 places, &c. Elmira, N. Y., Philadelphia, and Wilmington, Delaware, E. Tat- 

 nail. (Adv. from Eu.) 



