PLANTS OF NORTH ELBA 1 39 



7 Perigynia less than 5 lines long • oligosperma 



8 Pistillate spikes 2.5 lines wide or more 9 



8 Pistillate spikes 1-2 lines wide 14 



9 Peiigynia pubescent 10 



9 Peiigynia glabrous 11 



10 Leaves 2 lines wide or more Honghtonii 



10 Leaves less than 2 lines wide filiformis 



11 Staminate spike one .' 12 



11 Stamiuate spikes more than one 13 



12 Pistillate spikes 5-6 lines wide .' Inrida 



12 Pistillate spikes 3-4 lines wide Baileyi 



13 Pistillate spikes 4-5 lines w ide ntricnlata 



13 Pistillate spikes 3-4 lines wide monile 



14 Plant alpine, scales as broad as the peiigynia Bigelovii 



14 Plant not alpine, scales narrower than the perigynia 15 



15 Scales spreading, acute, longer than the perigynia Haydeui 



15 Scales erect or ap pressed, commonly obtuse 16 



16 Pistillate spikes approximate, basal sheaths not fibrillose.. lenticularis 



16 Pistillate spikes distant, basal sheaths tibrillose 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 pallesceus 



20 Sheaths of the bracts purple plantaginea 



20 Sheaths of the bracts green 21 



21 Perigynia faintly nerved, beak straight, scales purplish altocaulis 



21 Perigynia distinctly nerved, beak bent, scales pale laxifiora 



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 I ban 2 lines wide... 26 



25 Perigynia round-obovate crinita 



25 Perigynia oblong 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 teuuis 



28 Spike single, staminate above 29 



28 Spikes more than oua 1 30 



29 Perigynia subulate-pointed paucitlora 



