Cæspitosa. Radix repens, fibris longis albis implexa. Culmus biuncialis, obtusangulus, glaberrimus.
Folia setacea, canaliculata, glauca, glaberrima, stricta, erecta, culmum superantia, 1-4 pollices longa, apice
callosa, obtusa, nitente glabra, vaginis longis costatis, partem inferiorem culmi vestientibus. Spica linearis,
3-5 lineas longa, $ lin. lata, ferruginea, flosculis masculis 3-4, femineis 7*9 instructa. Squames imbricatæ,
lanceolatæ, acutæ, vel apice membranaceæ, obtusæ, perigyniis latiores et paululum longiores. Perigynium
(floriferum) l f lin. longum, f lin. latum, pallidum, nervosum. Achmium (valde juvenile) | lin. longum, £
lin. latum. Stylus insertus. Stig. 3, brevia.
T a b . CGVIII. Fig. 1, Male Flower ; ƒ 2, Perigynium :—magnified.
15. C. microglochin. Wahl.—Schk.f. 210.
H ab . Greenland. Horn, in Herb. Hooker.
16. C. pauciflora. Lightf.—Schk.fi. 4.
H a b . Rocky Mountains. Drummond. Sitcha. Bongard. Newfoundland. Herb. Banks.
17. C. Pyrenaica. Wahl.—Meyer, t. 7.
H ab . Rocky Mountains. Drummond.
18. C. nigricans. Meyer, t. 7.
H a b . Rocky Mountains. Drummond. Unalaschka. jEschscholtz.
19. C.Backii (Boott); spica and rogyna superne mascula flosculis masculis 3 minimis
obscuris femineis 2-4 laxis conspicuis instructa, stigmatibus 3, perigyniis globoso-ovatis
acuminatis conico-rostatis glabris ore integro superne subinflatis vacuis squama lata lan-
ceolata foliacea multum brevioribus. (T a b . CC1X.)
Häi. Carlton House, -Lake Winnipeg. Dr Richardson. Rocky Mountains. Drummond.
Cæspitosa, radice fibrosa. Culmus gracilis, nudus, superne clavatus, angulis acutis subulatis scabris,
sæpe abbreviatus, semper foliis brevior. Folia 1-2 lineas lata, 5-10 pollices longa, erecta,''Stricta, firma,
glabra, apice triquetra scabra, acuta. Spica subsexflora, 4 lin. longa, pars staminifera minima, obscura, triflora,
lineam longa, angustissima, pedicellata, vix longitudinem dimidiam flosculi feminei superioris attingens.
Squama externa cylindrico-clausa ? pallide ferruginea, apice membranacea: reliquæ oblongæ diaphanæ, arete
amplectentes. Stamina 2 ? Stylus sæpius exsertus. Stig. 3, crassiuscula, glabra. Squames fetninees inferiores
foliaceæ, lanceolatæ, acuminatæ, sursum decrescentes : superior perigynium subæquans : reliques eo
multum longiores, basi nervosæ perigynium amplectentes. Perigynium ovato-acuminatum, superne vacuum,
conico-rostratum, demum subpyriforme, ore integro, omnino glabrum binervosum, 2£ lin. longum, lineam
latum. Achenium 1$ lin. longum f latum, abbreviato-pyriforme, apice rotundatum basi abrupte contractum,
obscure triquetrum, pallidum.
C. Willdenowii, Schk. C. Steudelii, Kuntb, affines.—Differ t à priori flosculis masculis 3, nunquam (etiam
in culmis mareidis anni prions) conspicuis >imbricatis, stig. glabris, perigyniis, glabris. C. Steudelii, Kunth,
flosculis . masculis suhduodenis gaudet.
T a b . CCIX. Fig. 1, Male Spike and advanced Female Flower or Perigynium Achenium:—
magnified.
-t—t- Inferne mascula.
20. C. ursina. Dewey. (Tab. CCX.)
Hab. Arctic Sea Coast. Dr Richardson.
Tab. CCX. Fig. 1, Spike ; f. 2, Perigynium and scale; f. 3, Perigynium ; f. 4, Achenium :—magnified.
B . SpICULjE AGGREGATiE, ANDROGYNE, SESSILES. STIG. 2.
* Apice masculas.
21. C. disperma. Dewey:—C. loliacea. Dewey. Torrey.
H ab. Rocky Mountains. Torrey. Common in British America. Dr Richardson. Drummond.—(vix a
C. loliacea, L. distinguenda).
22. C. chordorhiza. Ehrh__ Schk.fi 31. G. Ii.
Hab. Hudson’s Bay, Cumberland House. Drummond. Lake Winnipeg, Norway House and Carlton
House. Dr Richardson. Greenland. Horn, in Herb. Hooker.
23. C. stenophyUa. Wahl.—Schk.f. 30.
H ab. Carlton House. Dr Richardson. Rocky Mountains. Drummond. N. W. Coast. Douglas.
Scouler.
24. C. incurva. Light.—Schk.fi 95.
H ab. Cumberland House, Bear Lake. Dr Richardson. Rocky Mountains. Drummond. Greenland.
Horn, in Herb. Hook.
25. C.fiulvicoma. Dewey.
H ab. Arctic Sea Coast. Dr Richardson.—(species minime cognita !).
26. C. anthericoides. Presl.—Kunth, Cyp. 418.
H ab. Port Mulgrave, Nootka Sound. Presl.
27. C. Hoodii (Boott); spica composita e spiculis 9-10 in capitulum ovatum arete congests
apice masculis, stigmatibus 2, perigyniis ovatis acuminato-rostratis ciliato-serratis
bifidis ore antice oblique fisso squamam ovatam acutam asquantibus. (Tab. CCXI.)
H ab. Columbia River. Douglas. Scouler.
Culmus bipedalis, debilis, infeme foliatus glaber, superne nudus acutangulus scaber, basi rudimentis foliorum
brevibus atro-purpureis tectus. Folia 1-1£ lin. lata, partem inferiorem fere dimidiam culmi alteraatim va-
ginantia, deorsum breviora, superius culmi gequans vel eo longius, supra (oculo armato) papilloso-scabra,
marginibus hispida apice triquetra scabra; Spiculis subdenis parvis ovatis in capitulum ferrugineum 8 lin.
longum, 5 lin. latum congestis : ad basin bracteis squamseformibus brevi-hispido-mucronatis sufiullis. Squa-
mee ferruginese, nervo pallido, ovato-acuminatm, acutse vel mucronulatse, perigynium subsequantes. Perigy