(279) 
Type locality: Between Morro and Rancho nuevo, Dept. Vera 
Cruz, Mexico. 
Distribution: Mexico 
Illustrations: A. Br. loc. czt. 
This form, of very doubtful specific value, is distinguished from 
C. fragilis by the golden, not black, odspores, the more slender 
sporocarps, and by having well-developed stipulodes in spite of the 
short bracteoles. 
28, Cuara FRAGILIS Desv.; Loisel. Not. Fl. France 137. 1810 
Cc. ya hl Sp. Pl. 1156, in part. me 
onoeci polymorphic, 2.5-75 cm. high, slightly or moder- 
ately incrusted, eee wee bearing bulblets ; stems 0.35-0.85 m 
spicuous, never bearing spine- -cells and very rarely papillae: stipu- 
lodes greatly reduced ee inconspicuous, ae a dou 
each node, or more or less undeveloped : s 6-9 in a whorl, 
4-30 mm. long, eos 5-8 doubly sal ate internodes, and 
an uncorticated 1- or 2-celled tip; the posterior and sometimes all 
the leaflets at the sterile nodes wanting, the anterior however often 
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long, 0.36-0.48 mm. wide, with 10-14 striae; whorl of crown-cells 
0.14-0.2 mm. high, 0.17-0.25 mm. wide at base, the individual 
cells oblong, usually truncate at the apex, usually erect and connivent. 
Type locality: Paris, France 
Distribution: Canada, United States and Mexico, but apparently 
not in the West Indies; cosmopolitan. 
Illustrations: Kiitz. Tab. Phyc. 7: A2. 54, 55; Flora Danica 
16: pl. 2796, 2797; Jour. Bot. 18: pl. 207, f. z; Migula, Char. 
Deutsch. Oesterr. Schw. f. 746, 747; Migula, Consp. Char. Eur. 
Sf. 134, 132; J. E. Smith, Eng. Bot. Supp. 2: f/. 2762; Ganterer, 
Oesterr. Char. p/. 2. f. 75, 76; Oltmanns, Morph. Biol. Alg. £7. 
207; Woods, Flor. Neb. 1: 2. 75; E. & P. Natiirl. Pllanzenfam. 
i; pl. 209. 
Exsiccatae: Allen, Char. Am. Exsicc. 27; Collins, Holden & 
Setchell, Phyc. Bor. Am. 7798. 
igula, Groves and others, cite among the synonyms of this 
