4»4 



JUNCACEAE. 



Vol. I. 



4. Juncoides spicatum (L.) Kuntze. Spiked Wood-rush. Fig. 12 16. 



Juncus spicatus L. Sp. PI. 330. 1753. 



Juncoides spicatum Kuntze, Rev. Gen. PI. 725. 1891. 



Luzula spicata DC. Fl. Fr. 3: 161. 1805. 



Closely tufted, without rootstocks. Stems erect, 

 4/-16' high, distantly 1-3-leaved, tapering to a filiform 

 summit; leaf -blades ¥'-i¥' broad, often involute, 

 especially above, tapering to a sharp apex, sparingly 

 webby, especially at the base; inflorescence a nod- 

 ding, spike-like, often interrupted panicle, commonly 

 i'-i' in length, usually exceeded by its lowest 

 involute-foliose bract; bractlets ovate-lanceolate, 

 acuminate, equalling the perianth, sparingly lacerate; 

 perianth brown, with hyaline margins, l"-lj" long, 

 its parts lanceolate, aristate-acuminate ; capsule 

 broadly ovoid, bluntly acute, about two-thirds as 

 long as the perianth; seed narrowly and obliquely 

 obovoid, about ii" long. 



Labrador to Quebec and Alaska ; mountains of New 

 England and New York ; south in the western mountains 

 to Colorado and California. Also in Europe and Asia. 



5. Juncoides arcticum (Blytt) Coville. Arctic Wood-rush. Fig. 1217. 



Luzula arctica Blytt, Norg. Fl. 1 : 299. 1861. 



Luzula campestris var. nivalis Laest. Kongl. Vet. Akad. 



Handl. 334. 1822. 

 Juncoides nivale Coville, Mem. Torr. Club 5: 108. 1894. 



Stems tufted, 2'-^' high, erect, 1- or 2-leaved. Leaves 

 with sheaths glabrous at the mouth, their blades l"-2" 

 broad, seldom exceeding i¥ in length, very minutely 

 roughened on the back, at least toward the apex, flat 

 and tapering to a usually blunt and callous tip; inflo- 

 rescence an erect oblong to ovate, spike-like cluster, 

 ¥ in height or less, exceeding its lowest semifoliaceous 

 bract; bractlet and perianth dark purple, the former 

 ovate and sparingly lacerate at the hyaline apex; 

 perianth-parts l"-i" in length, narrowly oblong, more 

 or less broadly acute at the paler apex, sometimes den- 

 ticulate above; capsule subspheric, obtuse or broadly 

 acute, exceeding the perianth ; seed narrowly oblong, 

 about i" long. 



Baffin Bay to Alaska. Also in arctic and alpine Europe 

 and Asia. 



6. Juncoides hyperboreum (R. Br.) Sheldon. Northern Wood-rush. Fig. 1218. 



Luzula hyperborea R. Br. Suppl. App. Parry's Voy. 183. 



1821. 

 Luzula confusa Lindeberg, Nya Bot. Not. 9. 1853. 

 Juncoides hyperboreum Sheldon, Bull. Geol. Surv. Minn. 9 : 



63. 1894. 



Stems tufted, commonly 4'-8' high, erect, 1-2-leaved 

 above the base. Leaves with sheaths sparingly ciliate at 

 the mouth, the blades erect, 4"-il" wide at the base, 

 commonly 2i'-7' long, usually involute in age, not 

 roughened on the back, tapering into a very sharp point; 

 inflorescence erect, exceeding its lowest foliose bract, 

 consisting of a single oblong cluster ¥ in length or less, 

 or its one or two lower divisions on peduncles i'-ii' 

 long; bracts and bractlets membranous, fimbriate; peri- 

 anth-parts brown, paler above, about ii" long, ovate- 

 lanceolate, acuminate, denticulate, or slightly lacerate at 

 the apex ; capsule about three-fourths as long as the 

 perianth, ovoid, obtuse; seed rather narrowly oblong, 

 about I" long. 



Arctic America, Labrador and the higher mountains of 

 New England. Europe and Asia. 



