58 CATALOGUE OF PLANTS. 



Order 99. OPHIOGLOSSACEJE. Adder's-Tongue Family, 



Botrychiuni, Swartz. Grape-Fern. Moonwort. 



B. simplex, Hitch. Hillside pastures ; very seldom met with. 



B. matricariaefolium, Al. Br. Not common. 



B. lanceolatum, Angs. Hillside pastures with the preceding two species,. 



and like them very rarely collected. 

 B. ternatum, Swartz. Pastures and hillsides. Among the numerous varie- 

 ties described by Prof. D. C. Eaton, the more common are : — 

 var. intermedium. A large form, 

 var. obliquum. Medium in size and more common, 

 var. dissectum. Occasionally with the last. ^qq. Eaton'' s Ferns of N'ortk 

 America. 

 B. Virginianum, Swartz. Rich woods ; common. 

 Ophioglossum, L. Adder's-Tongue. 



0. vulgatum, L. Bogs and pastures ; not uncommon. 



Order 100. LYCOPODIACEiE. Club-Moss Family. 



Lycopodium, L. Club-Moss. 



L. lucidulum, Michx. Damp woods; common. 



L. inundatum, L. Clayey ground ; Grantham Mt., Plymouth, and Han- 

 over, N. H. ; Hartland, Vt. ; etc. ; scarce. 



L. annotinum, L. Woods ; common. 



L. obscurum, L. Seldom distinguished from the variety. 



var. dendroideum. (L. dendroideum, Michx.) — (Tree Club-Moss.) 

 Woods ; common. 



L. clavatum, L. (Common Club-Moss.) Dry woods ; abundant. 



L. complanatum, L. (Creeping Ground-Pine.) With the above, common, 

 var. chamaecyparissus, Eaton. Occasional. 



Order ioi. SELAGINELLACEJE. Selaginella Family. 



Selaginella, Beauv. 



S. rupestris, Spring. Dry rocks ; common. 



S. apus. Spring. Wet places ; about springs ; much less common. 

 Isoetes, L. Quillwort. 



1. echinospora, Durieu. The type form is European, but the following 

 varieties are met with : 



var. Braunii, Engelm. Margin of ponds and streams. 



var. muricata, Engelm. Mouth of Pompanoosuc river, Norwich, Vt. 



var. Boottii, Engelm. Goose Pond, Canaan; Conn, river, Hanover. 

 I. riparia, Engelm. Margin of Conn, river, Hanover. 



[I. lacustris, L. Assigned to " Lebanon" in the Geological Survey of 

 New Hampshire. The species referred to is probably some var. of /. 

 echinospora ; but if /. lacjtstris is a New England species, it should be found 

 within our limits. Apparently very little is known about it.] 



[All the members of this genus are of somewhat uncertain determination. 

 They are found in our springs and ponds, and in the still and shallow mar- 

 gins' of our streams, or during a period of drought may be entirely out of 

 the water.] 



