XCV111 ADDENDA TO THE BOTANY OF THE NORTHERN STATES. 



of the Clouds, White Mountains of New Hampshire, W. Boott. (Labrador and 

 Saskatchawan to N. W. coast.) (Eu.) 

 P. 556. 



Grapllphorillll mclicoldcs, Beauv., is to replace Dupontia Coo- 

 ley i. See Ci'ui/ in Ann. Dot. Soc. CawtfL, and Proceed. Amer. Acad. 5, p. 190. 



P. 573 



A/KA (rather than A vena) CARYOPIIYLEA, L., resembling A. praecox, but 

 taller, and with a very diffuse paniele of purplish and at length silvery scarious 

 spikelets. was detected in abandoned fields reverting to forest, near Newcastle, 

 Delaware, by Win. M. Canty. (Nat. from Eu.) 



P. 576. 



i a Paspaliim Walterifiniun, Sennit. Spikes few (3-7), the 

 lowest scarcely emerging from the sheath, the mcmbranaceous rhachis blunt 

 and not projecting ; spikelets glabrous. Delaware, E. Tatnall, and southward, 

 in very wet places. 



P. 592 



3. Chcilailthos laimginda, Nutt. in herb. Hook. Stalks slender, 

 at first hairy, black or brown, shining ; fronds (3' -8' high) delicate, lanceolate 

 in outline, woolly with soft whitish hairs, becoming smoother above, 3-pinnate ; 

 pinnae ovate, the lower ones distant ; pinnules crenately pinnatifid, or mostly di- 

 vided into minute roundish segments, the herbaceous margin recurved, forming 

 an almost continuous involucre. (C. vestita, Hook, &e. C. gracilis, Mctten.) 

 In dense tufts on dry, exposed rocks and cliffs, along rivers, &c., Wisconsin ( T. 

 J. Hale), Iowa, and westward. Ultimate pinnules exceedingly small and 

 crowded. 



P. 606. 3. OTARSIUEA, L. 



Submersed or cmersed aquatic plants, with slender creeping rootstocks, send- 

 ing up elongated petioles, which bear at their apex a whorl of 4 nervose-veincd 

 leaflets, and at or near their base, or sometimes on the rootstoek, one or more 

 globular but somewhat excentric sporocarps. These sporocarps or fruit arc 2- 

 celled vertically, and with many transverse partitions, and split or burst into 2 

 lobes at maturity. On the partitions are inserted numerous short-stalked spo- 

 rangia, of two sorts intermixed ; the larger ones containing a single oval or ob- 

 long spore, the smaller containing many very minute spores. 



1. Iff. quadrifolia, L. Leaflets broaeUy obovate-cuncate, glabrous ; spo- 

 rocarps usually 2 or 3 on a short peduncle from near the base of the petioles, 

 pedicelled, glabrous or somewhat hairy. In water, the leaflets commonly float- 

 ing on the surface, Bantam Lake, Litchfield, Connecticut, Dr. T.F. A/Lm. Tho 

 only known habitat in America ! (Eu.) 



2. J?I. vestita. Hook and (Jrov., with hairy leaflets and villons short-stalked 

 or sessile sporocarps, will doubtless be found in the western part of Wisconsin. 



