394 CEYPTOGAMIA LYCOPODINE^E. [CL. XXIV. 



high : stalk sheathed at the base, bearing a leaf about the middle, 

 and terminating in a twice compound spike. Perennial: bears 

 fruit in July and August :. grows in dry pastures among short 

 grass : frequent. Eng. Bot. vol. v. pi. 318 : Osmunda Lunaria. 

 Eng. Fl. vol. iv. p. 328. 1500. 



15. OPHIOGLO'SSUM. AI>DER'S-TONGUE. 



Capsules roundish, one-celled, two-valved, connate, in two 

 opposite rows, upon a simple, linear, somewhat compressed spike. 

 Cover none. Seeds numerous, minute. Name from ophis, a 

 snake, and glossa, the tongue. 474. 



1. O. vulgdtum. Common Adder 's-tongue. Leaf egg-shaped, 

 about as long as the spike. Stem slender, about eight inches high, 

 bearing a simple leaf, and terminating in a slender spike, which 

 would have some resemblance to the tongue of a snake, were the 

 latter not forked. Perennial : bears fruit in June and July : grows 

 in moist pastures and in woods : frequent. Eng. Bot. vol. ii. pi. 108. 

 Eng. FL vol. iv. p. 330. 1501. 



Order II. LYCOPODI'NE^E. Capsules axillar or spiked, 

 with from one to three cells, and from two to three valves* 

 Seeds numerous, very minute. 



1. LYCOPODIUM. CLUB- MOSS. 



Capsules axillar, solitary, sessile, roundish, one-celled, two- 

 valved. Seeds numerous, chaffy, very minute. Name from 

 lycos, a wolf, and^ows, a foot. 475. 



1 . L. clavdtum. Common Club-moss. Stem creeping, branched ; 

 branches ascending ; leaves scattered, incurved, hair-pointed ; 

 spikes in pairs, cylindrical, stalked, with egg-shaped, membranous 



leaves. Stems several feet long: leaves crowded, narrow, and 



lance -shaped. The seeds explode when kindled, and are said to 

 be used for artificial lightning on the stage. Perennial : bears fruit 

 in July and August: grows on heaths : common. Eng. Bot. vol. 

 iv. pi. 224. Eng. Fl. vol. iv. p. 331. 1 502. 



2. L. inunddtum. Marsh Club-moss. Stem creeping, slightly 

 branched ; leaves scattered, narrow lance-shaped, pointless, entire ; 



spikes solitary. Stems three or four inches long. Perennial : 



bears fruit in June and July : grows in wet heathy places : rare. 

 Eng. Bot. vol. iv. pi. 239. Eng. FL vol. iv. p. 332. * 1503. 



3. L. selaginoides. Prickly Club-moss. Stems creeping; branches 

 ascending, simple ; leaves scattered, lance-shaped, fringed ; spikes 



terminal, solitary, with broader leaves. Stems short, the 



branches rising to the height of from two to four inches. Peren- 

 nial : bears fruit in August : grows in watery places, in moun- 

 tainous situations: frequent. Eng. Bot. vol. xvi. pi. 1148. Eng. 

 Fl. vol. iv. p. 332. 1504. 



4. L. seldgo. Fir Club-moss. Stems erect, forked, the branches 

 level at the top ; leaves in eight rows, uniform, narrow lance-shaped, 



acute, entire. Stem from three to six inches high, forked from 



the base, four times. Perennial : bears fruit in July and August: 



