122 



[Vol. 9 



GARDEN 



above sporangium level; stomata common; peripheral strands 6; 

 ligule small triangular; sporangia oval, 4-6 mm. long, almost or 

 completely covered by velum; megaspores white, 400-520 \i 

 (rarely 600) in diameter, with large well-rounded tubercles on 

 all faces, sometimes with scattered small additional warts on 

 upper faces; commissural and equatorial ridges frequently nodu- 

 lose; microspores fawn-colored, 26-33 \i long, conspicuously spin- 

 ulose, sometimes slightly crested. 



Distribution: Sardinia. 



Specimens examined: 

 Sardinia: submersed in aqueducts, near Pula, 22 May, 1863, 



Ascherson & tteinhardt (Mo. Bot. Gard. Herb.) ; Pula, June, 

 1863, Ascherson & Reinhardt (Mo. Bot. Gard. Herb, and 

 Gray Herb.) ; Pula, June, 1863, Ascherson (N. Y. Bot. Gard. 

 Herb.). 



This species is one of the forms very closely related to /. velata 

 A. Br. It may be distinguished partly by greater length of 

 leaves, which are finer, and partly by the tendency toward 

 smaller megaspores. 



17. I. alpina Kirk, Trans. N. Z. Inst. 7: 377. pi. 25. 1875; 

 Baker, Fern Allies, 127. 1887, and Jour. Bot. 18: 70. 1880; 

 Motel. . Yendr. Actes Soc. Linn. Bord. 36: 368. 1883. 



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



Corm 3-lobed; leaves 10-50, 10-40 cm. long, dark green, stout, 

 rigid, tapering to a point, with a wide membranaceous margin 

 narrowed immediately above sporangium; stomata present but 

 not numerous; peripheral strands lacking; ligule short, ovate- 

 triangular; sporangium oblong, 5-7, rarely 9, mm. in length; vel- 

 um complete; megaspores white when dry, brown-black when 

 wet, 400-520 p (rarely only 320) in diameter, chiefly smoothish, 

 sometimes lightly marked with large tubercles, few in number; 

 microspores rusty-brown, 24-31 \x in length, with numerous 

 spines. 



Distribution : New Zealand. 



Specimens examined: 



New Zealand: Lake Guyon, So. Isl., without date, Kirk (N. Y. 



Bot. Gard. Herb.); Lake Guyon, Nelson, alt. 3000 ft., Kirk 

 239 (IT. S. Nat. Herb, and Gray Herb.); Lake Guyon, Nel- 



