214 CRYPTOGAMIA FILICES. [CI. 24. 



of Scotl. and Irel. If. 5, 6. More rigid ; with a quite distinct 

 mode of growth, the pinnce being strongly curved backwards, 

 in a direction contrary to that of the fructification. 



474. OSMuNDA. Osmund-royal. 



1. O. regdlis, 3. 209. (Common O.) Leaflets oblong, nearly entire ; 

 dilated, and somewhat auricled, at the base. Clusters panieled, 

 terminal. 

 Shady bogs and woods ; not comm. If. 6, 7. Fr. 3 — 6 f. Pan. 

 comp. A large and beautiful fern. 



±15. BOTRYCHIUM. Moonwort. 



1. B. lunaria, Osmunda lun. 5. 318. (Common M.) Leaf solitary, 

 pinnate ; leaflets fan-shaped, notched. 

 Mount, past. If. 6. A span high, smooth, pale green. 



476. OPHIOGL6SSUM. Adder's-tongue. 



1. "O. vulgatum, 2. 108. (Common A.) Leaf ovate, veinless, about 



as tall as the spike. 

 Moist p st - "4-5. Scarcely a span high, green, smooth, simple. 



477. L: MUM, Club-moss. 



i. L. clavatum, 4. 224. (Common C.) Stem creeping. Branches 

 ascending; partially almost naked. Leaves scattered, incurved, 

 with filamentous points. Spikes two or three, cylindrical, stalked, 

 with dilated, membranous scales. 

 Heaths. If . 7, 8. Sterns several feet. Spikes sulphur-coloured. 



2. L. Selaginoides, 16. 1148. (Prickly C.) Stems recumbent, branch- 



ed ; shorter than the solitary, ascending, tumid spikes. Leaves 

 scattered, lanceolate, fringed ; the floral ones larger and more 

 spreading. 

 Wet alp. heaths. If. 8. Stems 3 in. terminating in a yellow spike. 



3. L. inundation, 4. 239. (Marsh C.) Stems depressed, creeping, 



slightly branched. Leaves scattered, linear-lanceolate, pointless, 

 entire. Spikes solitary ; their scales dilated at the base. 

 Wet sandy heaths. If. 6, 7. Spikes solit. 1 — 1^- in. on upright br. 



4. L. Seldgo, 4. 233. (Fir C.) Stems upright, forked, level-topped. 



Leaves in eight rows, uniform, lanceolate, pointless, entire, 

 slightly spreading. 

 Moist alp. heaths. If. 6 — 8. A span high. L. of a bright shining gr. 



5. L. annotinum, 24. 1727. (Interrupted C.) Stems recumbent at 



the base ; branches erect, annually proliferous at the summit. 

 Leaves scattered, in five rows, lanceolate, acute, naked-pointed, 

 slightly serrated ; the floral ones broader than they are long, 

 imbricated. 

 Mts. rare ; chiefly in the N. If. 6 — 8. Handsome. Flowering br. 

 erect, above a sjian high. 



