736 
CRYPTOGAMIA. MISCELLANE.E. Equisetum. 
MISCELLA’NEZ. 
EQUISETUM. Spike club-shaped, egg-oblong: 
fructifications target-shaped, opening inwards, 
sylvat‘icum,E, Stem bearing a spike: lea‘ es compound, 
arven’se, 
Hedur. Theoria. \-FI, dan. 1182-Bolt. fil. 33-Ger. 957; 
misprinted 953. 5~C, B. th. 245-Park. 1201. 5-Bolt. 
20 
The entire plant very much resembling in figure a fir-treey 
its leaves being all in whirls. Linn. Stem from 7 to 15 inches 
high, aed by sete scored, pale yellowish brown. Sheaths 
of the our, but d . Leaves 8, 10, or 15 in a whirl, 
enti. on ong ‘the upper knot of the stem. F ructifications 
about 15 ina whirl towards the bottom of the spike. Aunthers 
fixed to filaments, which, on being breathed upon, coil up, but 
in a moment becoming dry, they expand again. After several 
expansions and contractions they detach themselves, still con- 
tracting when moistened, gradually bending from a straight line 
into a circle. If a drop of water be pushed towards them, they 
contract mee it touches them. These ae are often so 
sudden as to throw the object out of the field of v 
Weed Horsetail Moist woods and shady Sse near rivulets, 
and in boggy ground. P. April, May. 
Var. 2. Leaves pointing all one way. R. 5 131.5. This 
happens when the stem has been trodden dow 
Var. 3. Leaves very long and very spud R. Sy. 131. 6+, 
In shady and moist situations. It is a variety of E. palustre 
Sci aoe of a pale yellow green colour. /éid. 
I believe this change in the habit occasionally takes place in 
bot apie and indeed more or less so in almost every plant in 
similar situations, 
E, Fertile stalk leafless: barren stem leafy, lying down 
eaves in whirls 
Curt. 285-Bolt. fil. 34—Kniph. 1-Dod. 73+ 2—Lob. it. ie 795» 
2-C: B, th. 247, the right hand part of the figure- 
Blackw. 217. 3 and 4—Fuchs. 322-J. B: iii. 730+ j= 
Trag. 692. 2—Lonic. i. 176. 2-Matth. 1027-Cam. epite 
77 1-Ded. 73. 4—Lob. obs. 461. 3. ic, i. 794. 2-Ger ee 
1114, 5~Park, 1202, 11-Fuchs. 322-F. B, iiie 729-2 
Ger, 956, 3 
