BOTANY OF THE NORTHERN UNITED STATES. XC^X 



8 a . S. (Isdlepis) Hallii, n. sp. Like S. debilis in general appearance, 

 but stems more slender (5'- 12' high), sometimes 1-leaved above the middle; 

 spikes 1 -5, ovate-fusiform, becoming cylindrical (4" or 5" long, hardly 1^" 

 thick), some of them occasionally short-stalked ; scales ovate, the greenish cen- 

 tre strongly keeled, sharp-pointed ; stamens 2 ; bristles none ; achcnium strongly 

 rugose transversely, plano-convex or (especially in Texan specimens, coll. C. 

 Wriyht) triangular. Along ponds, Mason Co., Illinois, with S. debilis, E. 

 Hall, and near St. Louis, Dr. Engelmann, and southwestward. Varies, like 

 no. 8, with a 2-cleft or 3-cleft style. I refer it to Scirpus, as the Scirpeous genera 

 will probably have to be reduced. 



P. 519. 



32\ Carex Norvegica, Schk. Pale; stem 1 or less high, angled; 

 spikes 2 - 5, rather approximate, oblong, short-bracted, with a few staminate 

 flowers at their base, or the terminal one all staminate ; perigynia oval or ob- 

 long, lenticular, many-nerved, with a short entire beak, equalling the obtuse 

 scale. Salt Marsh, Wells, Maine, Rev. J. Blake. (Eu.) 

 P. 519. 



53 a . C. rariflora, Smith. Resembles C. limosa (of which it was formerly 

 thought to be a variety), but smaller, 4' -9' high; the leaves flatter and rather 

 broader ; pistillate spikes with only 5 10 flowers, which are usually less crowded ; 

 perigynia very short-pointed or bluntish, rather shorter than and involved in the 

 broadly-ovate blackish scale. Mt. Katahdin, Maine (G. L. Goodale), aud 

 northward. (Eu.) 



P. 530. 



106 a . C. pallldosa, Good. More slender, spikes smaller and leaves 

 narrower than in no. 107 ; perigynia ovate, very strongly nerved, smooth, with 

 a 2-toothed orifice, about the length of the lanceolate awned scale. Border of a 

 salt marsh at Dorchester, Mass., near Savin Hill, W. Boott. (Nat. from Eu. ?) 



P. 534. 



130 a . C, Oliieyi, Boott. Near C. bullata, but with stouter stems, broader 

 leaves, and more numerous (4 - 6, usually 5) spikes, the fertile ones longer and 

 narrower (so as to appear more like those of C. vesicaria), more approximate, 

 the perigynia smaller, and with a shorter beak. In swamps, Rhode Island, 

 Olney. 

 P. 541. 



CRYPSIS SCHOENOIDES, Lam. (See Plate 1.) A dwarf grass, with decumbent 

 branched culms, short and rather rigid pointed leaves, and somewhat inflated 

 sheaths hairy at the throat, the uppermost partly enclosing the condensed spike- 

 like panicle ; the structure of the spikelets nearly as in Vilfa. (C. Virginica, 

 Nutt.) Streets of Philadelphia and vicinity. (Adv. from Eu.) 



542. 



2*. Vilfa Clispidata, Torr. Root perennial ; culms and leaves more 

 slender than in no. 2 ; panicle exserted, very simple and narrow ; spikelets 





