FERNALD. — CARICES OF SECTION HYPARRHENAE. 491 



Quebec to Athabasca and British Columbia, south to Pennsyl- 

 vania, Michigan, New Mexico, and Washington. 1 May-Aug. 



* * Perigynia entirely smooth at the tip (exceptional forms of C. canescens might 

 be looked for here ; and very rare individuals of C tenuiflora might be sought 

 in the preceding section). 



-t- Perigynia oblong or ovate-oblong. 



++ Perigynia 3 to 4 mm. long, uerved : culms weak, almost capillary : 

 spikelets 2 to 4, loose, silvery-green or silvery brown. 



= Spikelets closely approximate in a small usually bractless terminal 

 cluster : perigynia beakless. 



35. C. tenuiflora, Wahlenb. — Figs. 129, 130. — Lax, the culms 

 2 to 6 dm. loug, mostly exceeding the very narrow (0.7 to 2 mm. broad) 

 pale green leaves : spikelets subglobose, 3- to 10-flowered : perigynia 3 to 

 3.4 mm. long, 1.5 to 1.7 mm. broad, with the bluntish scarcely beaked 

 tip smooth or rarely with one or two teeth, about equalled by the ovate 

 or ovate-oblong white scale. — Kougl. Vet. Acad. Handl. xxiv. 147, 

 & Fl. Lapp. 232 ; Schkuhr, Riedgr. Nachtr. 17, t. Eeee, fig. 187 ; 

 Anders. Cyp. Scand. 59, t. 4, fig. 36; Hook. Fl. Bor.-Am. ii. 214; 

 Torr. 1. c. 392, 443 ; Carey, 1. c. 543 ; Boott, 111. iv. 144, t. 463 ; Fl. 

 Dan. Suppl. 13, t. 167; Bailey, Proc. Am. Acad. xxii. 145; Macouu, 

 1. c. 122 ; Britton, 1. c. 352, fig. 851 (as to habital drawing) ; Howe, 

 1. c. — Cold bogs among the mountains, Scandinavia. Bogs and wet 

 mossy woods, local, from eastern Ungava to western Keewatin and 

 Manitoba ; south to Westmoreland and Victoria Cos., New Bruns- 

 wick; southern Aroostook, Penobscot and Oxford Cos., Maine; Hamp- 

 shire Co., Massachusetts ; Oneida Co., New York ; Ingham Co., 

 Michigan ; Milwaukee Co., Wisconsin ; Chisago and Hennepin Cos., 

 Minnesota : also on Elbow River, Alberta, and near Victoria, 

 British Columbia (31acoun, hb. Geol. Surv. Can. nos. 25,571 & 

 30,517). 



1 The California material which has been referred here is C. Bolanderi, Olney, 

 differing in its less acutely angled culm, longer spikes of more approximate usually 

 more numerous lance-cylindric many-flowered spikelets, the lowest with or without 

 a short bract. The northwestern C. Bolanderi, var. sparsiflora, Olney (C. Deweyana, 

 var. sparsiflora, Bailey) is a distinct species, probably C. laeviculmis, Meinsliausen, 

 Acta Hort. Petrop. xviii. 326, in its small short-beaked strongly nerved finally 

 spreading thin-edged perigynia much nearer related to the eastern C. seorsa than 

 to the members of the Elomjatae. 



