discovered or described since 1874. 499 
8. D. moritziana, Presl. Has lately been found in Jamaica and 
Costa Rica. 
11*. D. polymorpha, Leprieur. Stipe long, i-jointed. Sterile 
frond oblong, a foot long; rachis not winged; pinnae 7-9, 
petioled, oblong-cuspidate, the end one the largest, 5-7 in. 
long, 2-2 \ in. broad; veins distinct, erecto-patent. Fertile 
frond with a jointed stipe ij ft. long and 9-1 1 narrower 
pinnae. Guadeloupe, Maze; Grenada, Shewing. Perhaps a 
mere variety of D. elliptica. D. oligosora, Fourn., also 
gathered by Fournier in Guadeloupe, has about the same 
number of pinnae as D. polymorpha , but they are only 1 -4—1 1 
in. broad, and narrowed more suddenly at the base. 
OPHIOGLOSSACEAE. 
Genus 73. Ophioglossum, Linn. 
The genus is monographed very carefully by Prantl, in Jahrb. 
Bot. Gart. Berlin, III, 297, tabs. 7-8. He admits 29 species, 
dividing into several our 0 . lusitanicum, nudicauhy and vul- 
gatum , on characters furnished by the rootstock and the 
venation of the barren frond. 
1*. O. minimum, Armstr. in Trans. New Zeal. Instit. 1880, 342. 
New Zealand. I have not seen a type-specimen, but suppose 
it to be identical with O. coriaceum , A. Gunn., which is kept 
up as a species by Prantl. 
5*. O. costatum, R. Br. Prodr. 163, should clearly be kept up as 
a primary species. It is spread from North Australia to 
West Africa and under it range O. brevipes, Beddome, O. 
Wightii, Hook, et Grev., O. aphrodisiacum, Welw., and 
O. fibrosum, Schum. et Thonn. 
7. O. intermedium, Hook. Further material shows this a mere 
form of 0 . pendulum. 
9. O. palmatum, L. Has now been found in Florida and 
Madagascar. 
Genus 74. Helminthostachys, Kaulf. 
1. H. zeylanica, Plook. Has now been found in the Solomon 
Islands and New Guinea. 
