1922] 



PFEIFFER — MONOGRAPH OF THE ISOETACEAE 177 



Calamaria tripus Kuntze, Rev. Gen. PL 2 : 828. 1891-93. 



Corm conspicuously 3-lobed; bulb of leaves small, bound by 

 the dark black remains of dying leaves ; leaves very slender, not 

 narrowed above, somewhat obtuse and tough, opaque; stomata 

 present; peripheral strands absent (?); ligule elongate-deltoid; 

 velum none (beyond the acute edge of the fovea) ; sporangium 

 without border, pale, becoming dark ashy, beautifully marked 

 w r ith few schlerenchyma cells; megaspores 400-460 u, dark when 

 wet or dry, meandriform-roughened on all faces; microspores 

 35-40 \i long, dark with loose exospore, somewhat wing-crested. 



Distribution: Swan River, Australia. 

 Description from Braun. 



45. I. Savatieri Franchet, Bull. Soc. Bot. Fr. 31: 395. 1884; 



Baker, Fern Allies, 133. 1887. 



Calamaria Savatieri Kuntze, Rev. Gen. PI. 2: 828. 1891-93. 



Corm obscurely 3-lobed, about 15-20 mm. in diameter; bulb 

 coarse, 2-3 cm. in diameter, bearing loosely imbricated bases of 

 leaves; leaves stout, subtetragonous, mucronate, about 20 cm. 

 long in submerged forms, much shorter (hardly 6 cm.) in 

 emersed plants, very coarse and rigid, broad (7-10 mm. at base), 

 with wide membranaceous margin; sporangium small, hardly 

 4 mm. long, ovate or suborbicular, with narrow area; ligule 

 ovate-deltoid, rough, fuscous; velum incomplete, covering 1/3- 

 3/4 of sporangium; megaspores white, rough all over surface, 

 marked finely with anastomosing ridges, more or less elevated; 

 microspores brown, very finely muricate or almost smooth, cris- 

 tate on one side. 



Distribution: Patagonia, lakes in vicinity of Puerto Bono, 

 Straits of Magellan. 



Description from Franchet. 



46. I. Eatoni Dodge, Ferns & Fern Allies of N. Eng. 31). 

 189(1; Bot. Gaz. 23: 32-39. pi. 4-5. 1897; Underwood, Native 

 Ferns and Allies, 146. 1900. 



/. valida Clute, Fern Allies, 236, 260. 1905. 



Corm 2-lobed; leaves 25-200, 10-60 cm. in length, much 

 shorter in summer (10-15 cm. long), coarse^ in spring forms; 

 stomata numerous ; peripheral strands variable in number, some- 



