Cass XXI—CRYPTOGAMIA.. 
208. EQUISETUM. L. (Horse-tail, Bhave- 
grass.) - 
Floral receptacles peltate, many angita: took. 
lected into a spike. Indusium.corniculate. Sta- 
mina 4, Style none. Seed.1. 
Herbaceous and leafless plants with fistulous s 
stems .which are either simple or branched, ramuli n 
ly verticillated,—articulated, joints surrounded with den- : 
tated sheathes, The vernal flowering stems, for the n 
part, quickly perishing are suceeeded by others. 
are barren and more durable. 
Species. 1. E. arvense. 2. sylvaticum, 3. uliginosum. 
4 palustre. 5. scirpoides. 6. hyemale. (Shave-grass). Ve- — 
ry abundant on the banks of the Missouri below the — 
Platte, and called. “‘ Rushes;” it is iound to be inj 
to horses which feed upon. it for any covsideable. 
length of time. 
A genus principally itidkipenous to Europe. 
309, LYCOPODIUM. LZ. (Club-moss.)- 
Capsules reniform, t-celled, 2-valved, many — 
seeded. Seeds very minute, resembling powder. . 
Herbaceous and branched, repent or erect; lenkes - 
imbricate ofien spreading or distichal, sempervirent; _ 
spikes simple or dichotomous, sessile or pedunc: 
terminal or axillary. Seed inflammable. 
Species. 1. Li. carokinianum.- 2. clasatun, = i 4 
ehyum, Pu. Nearly allied to the preceding, bat wit 
leayes entire, and not serrate as-in No. 2. 4. complét 
tum. 5. sabinefolium. 6. dendroideum. (Ground Pine.) _ 7. 
-annotinum. 8. inundatum. 9. alopecuroides. 10. s 
noides. 11: rupestre. 12+ albidulum. A mere ¥ y of 
the following? 15. apodum. 14: hetsee 0 es 
