1G0 EIGHTEENTH ANNUAL REPORT ON THE STATE CABINET. 



debilis, Michx. Weak-stemmed Car'ex. 



Damp woods, hills and hillsides. Abundant throughout the valley of the 

 Mohawk. On Frankfort hill near Wetmore's pond. Site of old Fort Bull on 

 Wood creek, Rome, Vasey. Bordersof streams near Oneida lake, Knieskern. 



Common in the north woods. Lewis and north Herkimer counties. 

 A small form on the sides of Bald rock. Frequent. 



var. /3 ; Boo//. Long-scaled Weak-stemmed Carex. 



Spicis 5-7 erectis, terminali mascula vel medio vel basi vel apice et 

 basi mascula, fcemineis linearibus angustis flosculis alternatim dispositis, 

 inferioribus saepe basi compositis ; perigyniis brevioribus, rostro rarius 

 scabro, squama oblongo-ovata obtusa vel acuminata acuta mutica ciliata 

 subequilata longioribus. Hab. New-York, S art well. 



Between a and (8 there are intermediate forms which insensibly unite them. 

 The specimens figured approach C. urctata ; but the scales and the sessile 

 perigynium, with its acute base, at once distinguish them : F. Boott. 



Rare. June. 



glabra, Boott. Smooth Carex. 



Woods and plains. 



Spicis 4-5 oblongis vel cylindricis pedunculatis pallidis, terminali 

 apice vel basi vel apice et basi rarius omnino mascula, reliquis fcemineis 

 subdensifloris, superioribus approximatis inferioribus longe exserte pe- 

 dunculatis nutantibus basi attenuatis laxifloris interdum compositis, infima 

 remota; bracteis vaginatis culmum subequantibus; stigmatibus 3; pe- 

 rigyniis triquetris turgidis lanceolato-ellipticis utrinque acutis vel rostellatis 

 glabris, ore bidentato, (laciniis acutis) nervatis nervis prominentibus pel- 

 lucide punctatis viridibus, squama ferruginea medio viridi nervata scabra 

 ovato-lanceolata acuta vel mucronata rarius obtusa ciliata latioribus sub- 

 duplo longioribus. (Tab. cclxxv.) Hab. In America Sept.; New-York. 

 Knieskirn. 



Culmus ig - 2 1 pedalis, apice setaceus, scaber; pars spicas gerens 

 4 — 9 poll, longa. Folia h lin. lata, supra vagineque inferiores scabrius- 

 cule. Bractee (nisi suprema) vaginate, culmum subequantes, vel infima 

 nunc eo brevior. Vagina infima sub 2 poll, longa, scabriuscula. Pe- 

 dunculi setacei, scabri, 2-3 poll, longi. Spies 8 — 21 lin. longs, 2 lin. 

 late. Squame ferruginee, medio viridi nervate, scabra; : mascule lan- 

 ceolate, obtuse, mutice, apice ciliate : fceminee acute vel obtuse, mu- 

 cronate. Perigynium 2^ - 3 lin. longum, T 8 - t 9 q- lin. latum, bidenta- 

 tum, laciniis acutis (nee membranaceis), nervis usque ad apicem conspicuis. 

 Achenium 1 lin. longum, -^ lin. latum, ovali-triquetrum, stipitatum, basi 

 styli apiculatum, flavidum. 



A C. ozylepide difFert culmo, foliis pedunculisque glabris (nee pilosis) ; 

 perigyniis majoribus; squamis mucronatis ; spicis interioribus nutantibus, 

 compositis. 



A C. formosa difFert spicis inferioribus, omnino fcemineis, etc. 



A C. debili difFert perigyniis rostellatis, ore acuta bidentato nee hyalino, 

 magis turgidis ; nervis validioribus ; squamis firmioribus. 



I have received this species under the names of C. formosa and C. debilis. 

 The absence of the subelongate rostrum, and of the hyaline obtuse orifice, 

 separates it from C. debilis and its allies. It has hitherto escaped the notice 

 of American botanists, and its value as a species must be determined by 

 future observation : F. Boott. 



Spicis distinctis cylindraceis pedunculatis ; terminali staminifera, inter- 

 dum ad apicem vel basin pistillifera, vel in medio ; spicis pistilliferis, 3-4, 

 sublaxifloris, bracteatis, inferne longo-pedunculatis et nutantibus; fructibus 

 tristigmaticis ovalibus subinflatis et inferne teretibus, superne conicis brevi- 

 rostratis, bidentatis glabris nervosis, squamam oblongam subacutam vel 

 lanceolatam multo superantibus; planta pallida et glabra. 



