56 ROBINSON: PTERIDOPHYTA 
LYCCPODIUM POLYTRICHOIDES Kaulf. Enum. Fil. 6. 1824 
TYPE LOCALITY: Oahu, Hawaiian Islands. 
DISTRIBUTION: On trees, at 600-1,000 m. elevation, Hawaiian 
Islands. 
SPECIMENS EXAMINED: Oahu, Chamisso B (type); Oahu, 
Mopala Valley, Kaala Mts., Forbes BM; Waiolaui Valley, Forbes 
BM; Konahuanui, Heller C; Kaala Mts., Hillebrand B; Martens 
B; Molokai, Hillebrand B; Kauai, Knudsen 34 B; Hawaiian 
Islands, Hillebrand 5904 B; 508 B; Menzies K; Wilkes Expedition K. 
Chamisso’s type is a slender plant about 15 cm. high, while 
Hillebrand’s specimen from Molokai is much branched and about 
40 cm. high. The others range between these. All, however, 
agree in the open angles of the branching, and in the many-ranked 
aculeate leaves, which bear sporangia in the last two or three divi- 
sions of the stem. 
PSILOTACEAE 
Represented in the Hawaiian Islands by coe single genus 
Psilotum. 
PSILOTUM Sw. Syn. Fil. 187. 1806 
Epiphytic or occasionally terrestrial plants; stems upright; 
roots fleshy; leaves small, scale-like, the sterile simple, the fertile 
bifid; sporangia borne in the axils of the leaves, 3-celled, opening 
by three valves from the apex; spores minute, yellow. 
Type species: Lycopodium nudum L. 
Stems triangular; sterile leaves aculeate, minute. P. nudum 
Stems flattened; sterile leaves obtuse. P. complanatum. 
PsILoTuM NupwumM (L.) Griseb. Abh. Kon. Gesell. Wiss. Gottingen 
7: 278. / 1887 
Lycopodium nudum L. Sp. Pl. 1100. 1753. 
Hoffmannia aphylla Willd. in Romer & Ust. Mag. Bot. 6: 17. 1789. 
Bernhardia dichotoma Willd. in Schrift. Acad. Erfurt. 1802: 11 
1802. 
Psilotum triquetrum Sw. Syn. Fil. 187. 1806. 
Psilotum oahuensis Miller, Bot. Zeit. 14: 238. 1856. 
TYPE LOCALITY: Jamaica, B. W. I. 
DIsTRIBUTION: On ground and on trees, in tropical countries. 
