Selaginella.| LYCOPODIACEAE. 647 
tomum, Lk. — Bernhardia dichotoma, Willd. — Spring, Monogr. Lycop. 
E5269; ' 
Common on the ground and on trees, from the plains up to 3000 or 4000 ft., the 
«Pipi» of the natives, with whom the yellowish spore- powder is a favorite remedy against 
diarrhoea in children, also as an external application in intertrigo. On grassy plains 
the plant grows low and tufted, only 3—4‘ high, with thick and stiff branches, while 
e epidendrous form ve elongate slender branches (var. gracile of authors), The 
species inha 
2. P. complanatum, Sw. J. c. pp. 188 & 414, tab. 4. — Stems 6—12' 
long, repeatedly dichotomous, the branches all flattened, linear, 1—2“ 
broad, mostly faleate, obtuse, deeply notched at the margins. Leaves at 
the notches, distant, minute, obtuse, inflexed, the fertile ones bifid. — 
Bot. Beech. p. 102. — Spring, 1. ¢. p. 271. — Bernhardia complanata, Willd. 
oa 
S 
On trees, much less frequent. — Found also in tropical America, the Society and 
Philippine Islds. 
3. SELAGINELLA, Spring. 
Spore-cases 1-celled, of two kinds, the microsporangia opening with 
2 valves, the macrosporangia with 2—4; the latter either intermixed with the 
of spikes and then larger. Microspores reddish or orange, tetraedrous 
Ss ite, : 
Prostrate-erect plants with angular stems; the sterile leaves either all 
alike and equally distributed round the stem, or dimorphous in 4 ranks, 
two of them lateral with larger uneven-sided patent leaves, two anterior 
small appressed. Spikes quadrangular. — The male microspore produces 
a rudimentary prothallium consisting of a single cell and a single anthe- 
ridium; the larger prothallium of the female macrospore bears several 
archegonia. Both kinds of prothallium develop while enclosed within 
the spore. 
In all our species the stem is goniotropous (its 4 planes oblique, the anterior angle 
re cathedrous (affixed to the planes) 
A large genus, spread over all tropical and most subtropical regions, which also sends 
rs in e colder zones. 
Sterile leaves all alike, homomorphous 1. S. deflexa. 
Sterile leaves of 2 kinds, dimorphous: 
stem- und branch-leaves nearly equal in size; plant small, tufted, 
2. S. parvula. 
moss -l § j ‘ f : ; , ‘ ‘ 2 
Stem-leaves larger than those of the branches; plants erect: 
i long : t : 
nch-leaves imbricate; spikes 3. S. arbuscula. 
bricate : 
Lateral bra 
Lateral branch-leaves not imbricate: 
Frond dark-green, obtuse, the stem losing itself before the 
end, the branches dichotomous, sinuose ; intermediate or nee 
i ranks ; ’ y j : 4, S. Menziesiv. 
at the base, pinnate, as are 
the branches; anterior leaves at last in 1 row 
The S. lepidophylla found by Luerssen among Wawra’s pl 
not of Hawaiian origin. 
s 5. S. Springii. 
ants (Flora, 1875, p. 440) was 
