SPATOGLOSSUM 69 
Dictyota. Such specialized cortical cells and the resulting areola- 
tions or striations seem to be of rare occurrence in 5. crispatum, 
though they are occasionally found near the margins. However, the 
cortical cells, viewed from the surface, show, more or less clearly, a 
grouping in rhombic areas bounded by hyaline lines. | 
We have seen and photographed the type specimens of both 
Spatoglossum Schroederi (type from Brazil) and 5. Areschougii 
(type from Pernambuco) in the Agardh herbarium, but have not 
examined them microscopically. For the above comparisons as 
to cell structure we have relied upon West Indian and Floridian 
specimens that seem referable to these species. 
Possibly an incomplete specimen from the Galapagos Islands, 
referred by Piccone, with some doubt [Mem. R. Ассай. Lincei IV’. 
6: —(17). 1889] to Spatoglossum Schroederi, belongs here, but we 
have not seen it. Montagne (Fl. Boliv. 34. 1839) also mentions 
Zonaria Schroederi as occurring at Cobiia, at that time in Peru, but 
now in Chile. 
An old and decaying fragment of afrond bears, besides numerous 
epiphytes, many sporelings of the Spatoglossum which have 
developed on the surface of the frond. These are at first filiform 
or clavate, later oblanceolate, obovate, or subspatulate. 
PLATE 13, FIGURES 1-4. Spatoglossum crispatum 
1. A portion of the thallus margin of a tetrasporic plant. 
2. A portion of a cross section of thallus, showing young tetrasporangia, e 
3. Outlines of cross sections of the thallus; the lower from near the base ат a costa- 
like structure; the upper taken 3 or 4 cm. above the base and showing a more 
clearly defined costa and lamina 
4. Cross quus through costa near base 
he figures are drawn from em type material (Islands of Lobos de Afuera, 
Coker 145 aT Figures 1 and 3 are enlarged 9 diameters; 2 and 4, 68 diameters. 
PLATE 26. Spatoglossum crispatum. 
Photograph of type specimen (Coker 145 p.p.—from liquid preservative), natural 
size. 
NEUROCARPUS Web. & Mohr, Beitr. Naturk. 1: 
300 (242-246). 1805 
Dictyopteris Lamour. Nouv. Bull. Sci. Soc. Philom. 1: 332. My 
1809; Jour. de Bot.2: 129. 1809.* Kjellm. in Engler & Prantl, 
* The compilers of the list of “nomina conservanda" adopted by the Brussels 
Congress prefer to retain the name Dictyopteris for this genus, but inasmuch аз 
Neurocarpus was established in a manner that complies fully with the generally 
