ORDER 157. LYCOPODIACEJS. 



2 L. lucidulnm MX. Shining C. Ascending, forking, 816' ; Ivs, IL 8 rows, linenr. 



lanceolate, denticulate, shining, spreading or reflexod, pointed, large for the genus 

 (3 4"), the fruitful ones like the rest, as in No. 1. Dump wood?. 



3 It* iimndatum L. Marsh C. Stem creeping, often submersed, the simple soli- 



tary ped. 1 3' (Conn., Mr. Bowles) or 4 7' (Mass., Dr. Ricard) ; leaves soft and fine, 

 curving upward : spike solitary, 1 1|' long, leafy; Swamps, Can. to Car. 



4 It. al ope euro ides L. Sterile branches decumbent, shorter than the tall (720') 



erect fertile ones ; leaves crov/ded, subulate, awned ; spikes leafy, 23' long. 

 Swamps in pine-barrens, N. J. to Fla. .ind La. 



5 I. aimot in um L. Creeping, branches twice forked, ascending 6 8'; leaves in 



5 rows, lance-linear, spreading, denticulate ; spikes solitary. Woods, N. 



6 I*, dendroidenm MX. Tree C. Ground Pine. Erect, about S', with its erect 



branches spirally arranged, forked and crowded ; Ivs. lance-linear, in 6 equal rows ; 

 spikes several but solitary, 1|', yellow-brown. Woods. Yory elegant. 

 j3. obficnnnn. Branches spreading ; spikes 1 or 2, greenish brown. 



7 I*. C'arollMiannm L. Stem and branches creeping and rooting ; lv?. appearing 2- 



ranked, the lateral spreading while the others are apprcssed. lanceolate ; peduncles 

 simple, 2 4', bearing each a single spike. Barrens, N. J., and S. 



8 Ij. sablnaelolinm Willd. Ground Fir. Long, creeping; branches erect, short, 



with fastigiate branchlets ; Ivs. terete-subulate ; ped. short. White Mts., and N. 



9 1.. coniplaiiatum L. Festoon Ground Pine. Long, trailing; branches repeat- 



edly forking, fan-shaped, spreading; leaves 4-ranked, the marginal connate, diverg- 

 ing, the others distinct, appressed* peduncles long, with 4 6 spikes. Woods. 



10 Li. clavatum L. Common C. Extensively creeping, branches ascending ; leaves 

 scattered, incurved, bristly-acuminate ; peduncles erect, remotely bracted, 3 5', bear- 

 ing a pair of straight spikes 2' long. In shades : common. 



2. SELAGINELLA, Spr. DWARF CLUB Moss. Fruits of two kinds, 

 viz., antheridia, which are 1-celled, opening at apex; and oophoridia, larger, 

 containing 1 4 (rarely 6) globous-angular grains. A large genus. The 

 species are cultivated in every greenhouse. Spikes quadrangular, bracts 

 in 4 rows. (Lycopoclium L.) 



Leaves all alike and similarly imbricated all around. Native NOP. 1, 2 



Leaves of 2 kinds, in 4 rows, those of the 2 lateral rows larger and spread- 

 ing, of the 2 intermediate rows superficial, small, appressed.. .(a) 

 a Slender rootlets produced along the stems. a; Leaves unequal-sided. .Nos. 35 



x Leaves equal-sided Nos. 6 8 



No rootlets, &c. y Stems erect, frond-like, simple, stalk-like below. .Nos. 9 11 

 y Stems diffuse, branched from the base Nos. 12, 13 



V S. ru pest re (L). Sts. ascending, 24', divided into numerous tufted, mossy branches ; 



leaves crowded, fine, blue-green, ciliate ; spike indistinct, (V. Rocks. 

 2 S. selaginoldes (L). Stem filiform, creeping, branches suborect, 3 C', the fertile 



simple, 1-spiked ; leaves lanceolate, yellow-green, ciliate. Wuuds, N. 

 8 S. apus Spr. Stem weak, loosely branched, with hair-l ! .ke rootlets near the base ; 



leaves ovate, slightly oblique, acutish, the smaller ones pointed. Damp, t 



4 S. STOLONIFERA. Sts. producing long threadform rootlets below, 3^1-pinnately branch- 



ed ; brauchlets 2 4" broad ; Ivs. imbricated, ovate, entire, obtuse,the smaller ones with 

 a filiform straight point. The older stems become zigzag. 6-10'. Com. (S. Mertensii.) 



5 S. DENTICULATA (or Kraussiana). Prostrate, delicate, remotely and somewhat 3-pin- 



nately branched ; leaves 1", oblong-ovate, minutely denticulate, acute, distant on the 



stem, crowded on the branchlets ; smaller leaves with rcflexed points. Very common. 



ft. VARIEGATA. Ends of the branchlets with their leaves white. Rootlets hair-like. 



O S. UKCIKATA (or csesia). Long-creeping, with hair-like rootlets. 2- 3-pinnately branched. 



