466 102. LTCOPODIACE^.. 



** Capsules hurst ing. — With leafy stems. 



2. Lycopoditjm. Caps, of one Mnd, 1-celled, containing 

 many minute spores. 



3. Selaqinella. Caps, of two kinds, small containing many- 

 minute spores, or larger and containing about 4 large spores. 



1. Iboeies Linn. Quillwort. 



* No persistent leaf-bases. Caps, not wholly covered by the 

 membranous edge of the pouch. Back of swollen leaf-base 

 smooth. — Aquatic. 



1. I. lacus'tris (L.) ; 1. subulate roundish-quadrangular with 4 

 longiUidinal jointed tubes upright dark green, larger spores 

 bluntly tiiherckd rather mealy, tubercles overtopped by the 

 valve-edge?.— .£". B. 1084. H. F. 55. E. vii. 1.— Corm with 

 longitudinal furrows. L. slender, broad and flat at the base, 

 but elsewhere between cylindrical and quadrangular, 2 — 6 in. 

 long. — I. Morei (Moore) is a form with exceedingly long leaves. 

 /. of JB. xvi. 1. 199. — Usually csespitose on the sandy and stony 

 bottom of lakes and pools in hilly districts. P. VI. E. S. I. 



2. I. echinos'pora (Dur. !) ; 1. subulate roundish-quadrangular 

 with 4 longiludinal jointed tubes patent pale green, larger spores 

 very acutely tiibercled, tubercles overtopping the valve-edges. — 

 J. of B. i. t. 1. — Much hke Sp. 1. Corm not furrowed. L. 

 turning yellow, less rigid, flattened and dilated below. Spores 

 covered with long acute spine-like tubercles, not mealy. — 

 Usually solitary on the muddy bottom of pools and lakes in hilly 

 districts. Llanberis, N. Wales. Loch of Park near Aberdeen. 

 Ben Voirlich, Dumbartonshire. Gap of Dunloe, Kerry. P. VI. 



E. S. I. 



** Oorm more or less covered by the persistent hardened leaf- 

 bases. Caps, wholly covered by the membranous edge 

 of the pouch. Swollen leaf -base with a central longitudinal 

 rugose band on the back. — Terrestrial. 



[/. Tlys'trix (Dur.) ; 1. filiform plane-convex obscurely tubu- 

 lar, persistent l.-bases short blackish each with 2 long horns and 

 an interra. tooth, larger spores white and bluntly tubercled. — 

 I. Duriei H. F. 68. — Corm. small, rarely if ever quite naked. 

 L. very slender, ultimately very much enlarged at the base to 

 enclose the capsule, 1 — 2 in. long, annual. — Dampish sandy and 

 stony places. L'Ancresse, Guernsey. Mr. O.Wplsey. P. V. VI.l 



