g - Бал a Giaa мера. РНЕ ТРУ АҺ Леа әзілін» мъ мод. 11 са 2 
аб јони за 11 дама мис hu wh ваз айна ваља Севана ш-н дас за а ананды Айнамен түү ИЧРЕ ЫЙ Нло май шасы = о ET ы 
GELIDIUM 95 
in its branching; the main axes toward the apices are about twice 
as broad as the corresponding axes in G. serrulatum; the marginal 
teeth when present are more acute and more irregular in form; the 
sporangiophyls are commonly lobed or compounded, while those 
of G. serrulatum are described as merely serrate. We have ex- 
amined in a cursory manner the type of Gelidium serrulatum in 
the Agardh herbarium, but have been able to study more carefully 
an authentic sterile fragment of the La Guayra material through 
the courtesy of Professor W. G. Farlow. 
Of Gelidium seminudum J. Ав. (Linnaea 15: 17. 1841; Sp. 
Alg. 2: 474. 1852), described from Peru, we have seen only a 
photograph of the type specimen. It was compared by 
Agardh with G. cartilagineum and justly so, while Dr. Coker's 
plant, as remarked above, bears a much closer resemblance to G. 
pristoides. Тһе primary pinnae of С. seminudum were described 
as 4-5-роШсагев (10-12.5 cm. long), while in ours they are mostly 
0.8—5.0 cm. long; the pinnules were described ав “‘filiform,” a term 
that would not suggest itself in connection with the pinnules of our 
specimens; the description of the sporangiophyls is hardly appli- 
cable and, altogether, Gelidium seminudum seems amply different 
from our G. crispum. 
From the type specimen of Gelidium filicinum Bory, G. crispum 
differs in being less regularly and less densely pinnate and less 
compound (С. filicinum is 3-4-pinnate from the very base); the 
main axes are 2.0-3.2 mm. broad, while those of G. filicinum are 
0.5-1.0 mm. broad; the type of G. filicinum has been assumed to 
be sterile, but some of its branchlets have the appearance of being 
incipiently tetrasporic and if this is true the sporangiophyls are 
evidently much simpler than those of G. crispum. 
PLATE 33. Gelidium crispum 
Photograph of two clusters of plants (from liquid preservative), natural size. 
PLATE 34, FIGURES 1-6. Gelidium crispum 
I. Apical portion of the main axis, showing young sporangiophyls, etc. | 
2. Apical portion of a primary ріппа, with more lobed and dissected sporangiophyls. 
3. A portion of the margin of a primary pinna towards apex (rather more serrulate | 
than usual) | 
4, 5. Outline of cross sections of main axis and primary pinnae. 
6. A large compound or much dissected sporangiophyl. 
All of the figures are drawn from the type material (Pescadores Islands, region of 
Апсдп, Coker 80 p.p.). Figures 1, 2, 4-6 are enlarged 9 diameters; 3, 40 diameters. 
