54 ROBINSON: PTERIDOPHYTA 
the Berlin Herbarium are there separated into two species, L. 
crassifolium and L. capillaceum, the former of which is the more 
robust. It is difficult, however, to determine constant characters 
which may be termed diagnostic, whether one tries to separate 
the plants into two species as at Berlin or into seven with Miiller 
(Bot. Zeit. I9: 161. 1861). 
LycopopiIuM NUTANS Brack. Fil. U.S. Expl. Exped. 327. 1854 
TYPE LOCALITY: Oahu, Hawaiian Islands. 
DISTRIBUTION: On trees, at 600 m.-1,000 m. elevation, rare, 
Hawaiian Islands. 
ILLUSTRATIONS: Brack. Fil. U. S. Expl. Exped. pl. 46. 1854. 
FLATE t, 
SPECIMENS EXAMINED: Oahu, Nuuanu Valley, Hillebrand B; 
Robinson 199 V; W. Maui, Wailua Valley, Hillebrand B. 
The conspicuous difference between the slender fertile portion 
which terminates the branch and the broad sterile portion with its 
stiff coriaceous linear-lanceolate leaves, gives the distinguishing 
feature which separates L. nutans from L. squarrosum Forst. In 
the latter, the transition is gradual between the sterile and fertile 
areas. 
Brackenridge in describing L. nutans as a new species closely 
related to L. phyllanthum Hook. & Arn. says: ‘This is one of the 
most robust species of the genus. It is very well distinguished 
‘from the preceding (L. phyllanthum) by its stouter stem, and its 
‘thick, nodding spikes; the leaves on the stems also are more 
‘crowded and the scales of the spikes are of considerably greater 
length.” 
LYCOPODIUM PHYLLANTHUM Hook. & Arn. Bot. Beech. 102. 1832 
Lycopodium pachystachyon var. B phyllanthon Spring, Mém. Acad. 
Brux. 24: 29. 1848. 
‘TYPE LOCALITY: Hawaiian Islands. 
DISTRIBUTION: Pendulous on trees; Hawaiian Islands, Tahiti, 
Samoa, Borneo, Java, India. 
ILLUSTRATION: PLATE 2. 
SPECIMENS EXAMINED: Hawaii, Robinson 263 V; Maui, Robin- 
son 389 V; Oahu, Heller 2182 C; Hillebrand B; Knudsen 29 B; 
