ROBINSON: PTERIDOPHYTA OF THE HAWAIIAN IsLANDS 2385 
DisTRIBUTION: On ground, appearing after rains; often near 
the seashore or in soil that has been taken from the shore; Hawai- 
ian Islands. 
ILLUSTRATION: Brack. Fil. U.S. Expl. Exp. pl. 44. f. 1. 1854: 
SPECIMENS EXAMINED: Maui, Hillebrand B; Oahu, Forbes BM; 
Remy B; Hawaiian Islands, Baldwin 113 B, C. 
The point of divergence between the leaf and sporophyl is on 
the petiole in O. nudicaule Sw. (Syn. Fil. pl. 4. f. 2. 1806), while 
in O. concinnum Brack. it is at the base of the blade; the blade 
is ovate in O. nudicaule rather than elliptical as in O. concinnum, 
and there is no trace in the Hawaiian plant of the midrib men- 
tioned for O. ellipticum (Hook. & Grev. Ic. Fil. pl. 40. 1831). 
All these forms, however, are closely related. 
3. OPHIODERMA (BI.) Endl. Gen. Pl. 66. 1836 
Epiphytic plants; rootstock erect, less than 1 cm. high; roots 
fleshy; leaves not articulate, strap-shaped, sessile, fleshy, brittle; 
venation reticulate, without free included veinlets; sporophyl a 
two-ranked spike of coalescent sporangia, arising from the middle 
of the blade. 
Type species: Ophioglossum pendulum L. 
OPHIODERMA PENDULUM (L). Presl, Suppl. Tent. Pterid. 56. 1845 
Ophioglossum pendulum L. Sp. Pl. ed. 2. 1518. 1763. 
TYPE LOCALITY: Amboina, Molucca Islands. 
DisTRIBUTION: On trees or fallen logs, at elevations of 600- 
1,500 m.; Asia, Australia, Polynesia. 
ILLustrations: Hook. & Grev. Ic. Fil. pl. 19. 1831; Rumpf. 
Amb. pl. 37. a3. 274at, 
: ‘SPECIMENS EXAMINED: Hawaii, Robinson 212 V; Wilkes Expe- 
dition N; Maui, Lichtenthaler N; Robinson 304 V; 320 V; Oahu, 
sien! 2217 C, N; Robinson 8 V; 43 V; 111 V; 115 V; Safford 
920 N; Kauai, Robinson 429 V; 443 V; Hawaiian Islands, Bald- 
es hig B, C; Miss Sessions C; ex Herb. John Donnell Smith 
3. MARATTIALES 
abe herbaceous, consisting of a fleshy or tuberous rootstock, 
a. Y Toots, and cespitose, stipulate, bipinnate to tripinnate 
» Which are articulate upon the stem and circinate in 
