Zycopodium'] LYCOPODiACEa:. 103 



Stems 2-4 ft. long, pendulous from trees, 

 &c. Leaves linear-oblong or -lanceo- 

 late. Spikes 2-6 in. long ; bracts 

 broad, shorter than the capsules ... 3. L. billardieri. 



II. — Leaves under ^ in. long, imbricating all round the stem. 

 Spikes cylindrical, sessile. 



a. ■ Stems IS ft. long. Spikes terminal. 



Stems erect, densely branched. Spikes 

 ^-f in. long, erect, with squarrose 



scales 4. L. densum. 



' Stems creeping, with spreading or flexuous 

 branches. Spikes ^^ in. long, usually 

 nodding, with toothed or ciliate scales 5. L. cemuum. 



b. Sterna 2-Jf in. long. Spikes terminal. 



Stems procumbent, densely branched. 

 Spikes J-| in. long, erect, with 

 slightly-toothed scales 6. L. ramulosum. 



c. Stems 3-10 in. long. Spikes lateral. 



Stems branched from the base ; branches 

 slender, erect. Spikes ^f in. long, 

 erect ; scales broad, with a short, 

 acuminate apex 7. L. laterala 



III. — Leaves under ^ in. long, imbricating all round tJie stem. 

 Sjnkes peduncled. 



Stems creeping, 2-6 in. long, with few 

 branches. Spikes 1-2 in. long, on a 

 stiff lateral peduncle, 1-4 in. long... 8. L. carolinianum. 



Stems creeping, 4-10 in. long, with 

 numerous dense branches. Spikes 

 1-3 in. long, on short, stout, terminal 

 peduncles 9. L. clavatum. 



IV. — Leaves in two opposite rows, with smaller adnate ones. 

 Spikes cylindrical, terminal, and sessile. 



Stems creeping, 1-2 ft. long. Spikes 



solitary or in pairs 10. L. scariosum. 



Stems climbing, 2-10 ft. long. Spikes in 



branched panicles 11. L. volubile. 



1. L. selago, L. 



Stems 3-6 in. long, erect or slightly decumbent, and rooting at the 

 base ; stout, and usually forming dense, level-topped tufts. Leaves 



