639 
LYCOPODIACEJE. (CLUB-MOSS FAMILY.) 
powdery reddish or orange-colored spores; and of 3-4-valved 
tumid oophoridia , filled by 3 or 4 (rarely 1 or 6) much larger glo¬ 
bose-angular spores ; the latter either intermixed with the former 
• ^e same axils, or solitary (and larger) in the lower axils of the 
leafy 4-ranked sessile spike. (Name a diminutive of Selago, an 
ancient name of a Lycopodium, from which this genus is separated.) 
* Leaves all alike , equally imbricated ; those of the spike similar. 
L S. sclaginoidcs. Sterile stems prostrate or creeping, small 
and slender; the fertile thicker, ascending , simple (3/-3 f high) ; leaves 
lanceolate, acute, spreading , sparsely spinulose-ciliate. — Wet places, 
New Hampshire ( Pursh) and Michigan!—Leaves larger on the 
fertile steins, thin, yellowish-green. 
2. S. i'll pest I'is, Spring. Much branched in close tufts (V - 3 
high) ; leaves densely appressed-imbricated , linear-lanceolate, convex 
and with a grooved keel, minutely ciliate , bristle-tipped ; those of the 
strongly 4-angular spike rather broader; the two sorts of fructification 
in the same axils. (Lycopodium rupestre, L.)— Exposed rocks, com¬ 
mon. — Grayish-green, resembling a rigid Moss. 
* * Leaves of 2 sorts , appearing 2-ranked. 
3. S. ft pus, Spring. Stems tufted and prostrate, creeping, much 
branched, flaccid; leaves pellucid-membranaceous, 4-ranked; those 
of the lateral rows spreading horizontally, ovate, oblique, mostly ob¬ 
tuse ; the others much smaller, appressed, taper-pointed ; those of the 
short spikes nearly similar; oophoridia copious at the lower part of 
the spike. (Lycop. apodum, L.) — Low, shady places. S. New Eng¬ 
land, near the coast, to Penn., and southward. — A delicate little 
plant, resembling a Moss or Jungermannia. 
Order 133. HYDROPTERIDES. 
Aquatic cryptogamous plants , of diverse habit y with the 
fructification borne at the bases of the leaves , or on sub - 
merged branches , consisting of two sorts of organs (of du¬ 
bious nature), contained in indehiscent or irregularly burst¬ 
ing involucres (sporocarps). 
Suborder I. ISOETINEjE. (The Quillwort Family.) 
Stemless rooting plants growing under water : sporocarps in the 
axils and immersed in the inflated base of the grassy-stalk-like leaves. 
(Allied to Club-Mosses.) 
1. Isoetes. Sporocarps membranaceous, traversed with delicate 
thread-like partitions. 
