PLANTS OF NORTH ELBA 



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7 Perigyuia ]ess than 5 lines long oligosperma 



8 Pistillate spikes 2.5 lines wide or more 9 



8 Pistillate spikes 1-2 lines wide 14 



9 Perigynia pubescent 10 



9 Perigynia glabrous 11 



10 Leaves 2 lines wide or more Houghtonii 



10 Leaves less than 2 lines wide filif ormis 



11 Staminate spike one 12 



11 Staminate spikes more than one 13 



12 Pistillate spikes 5-6 lines wide lurida 



12 Pistillate spikes 3-4 lines wide Baileyi 



13 Pistillate spikes 4-5 lines wide utriculata 



13 Pistillate spikes 3-4 lines wide monile 



14 Plant alpine, scales as broad as the perigyuia Bigelovii 



14 Plant not alpine, scales narrower than the perigynia 15 



15 Scales spreading, acute, longer than the perigynia Haydeni 



15 Scales erect or appressed, commonly obtuse 16 



16 Pistillate spikes apjtroximate, basal sheaths not fibrillose.. lenticujaris 



16 Pistillate spikes distant, basal sheaths fibrillose stricta 



17 Pistillate spikes erect or spreading or the lowest sometimes 



drooping 18 



17 Pistillate spikes recurved or drooping 22 



18 Pistillate spikes densely flowered 19 



18 Pistillate spikes loosely flowered 20 



19 Perigynia scabrously pubescent, beaked scabrata 



19 Perigynia glabrous, with a twisted beak torta 



19 Perigynia glabrous, beakless pallescens 



20 Sheaths of the bracts purple plantaginea 



20 Sheaths of the bracts green 21- 



21 Perigynia faintly nerved, beak straight, scales purplish altocaulis 



21 Pei'igynij, distinctly nerved, beak bent, scales pale laxiflora 



22 Pistillate spikes less than 6 lines long 23 



22 Pistillate spikes more than 6 lines long 24 



23 Radical spikes present pedunculata 



23 Plant with no radical spikes Magellanica. 



24 Pistillate spikes 2-3 lines wide 25 



24 Pistillate spikes less than 2 lines wide 26 



25 Perigyuia round-obovate crinita 



25 Perigynia obloug- ovate gynandra 



26 Scales purplish brown or blackish torta 



26 Scales pale or green 27 



27 Perigynia oblong, beakless gracillima 



27 Perigynia oblong, beaked, short stalked arctata 



27 Perigynia fusiform, beaked, sessile tenuis 



28 Spike single, staminate above 29 



28 Spikes more than one 30 



29 Perigynia subulate-pointed pauciflora 



