12 ENGLISH BOTANY. 



upper part of the stem in the axils of the leaves, roundish or 3- or 4-lobed, 

 1- to 3-celled, 1- to 3-vaIved. Spores uniform, all extremely minute. In 

 the only case in which germinating spores have been observed (those 

 of Lycopodium annotinum), they had produced an irregularly lobed 

 subterranean prothallium, destitute of chlorophyll, sparingly furnished 

 with small root-hairs; the upper surface has numerous grooves and 

 protuberances, in which antheridia and archegonia were found con- 

 taining antherozoids. The archegonium was not observed, but the 

 position it would occupy is indicated by the germinating plants. See 

 Sachs' 'Text Book of Botany,' translated by Bennett and Dyer, 

 p. 400. This agrees quite with the reproduction of Ophioglossiacese, 

 with which Berkeley has pointed out their connection previous to the 

 discovery of the prothallium mentioned above. See ' Introduction to 

 Crypt, Botany,' p. 549. 



GENUS L—Im YCOPODIUM. Linn. 



Sporangia roundish-reniform, 1-celled, 2-valved ; spores marked 

 with 3 striae. 



Herbs or small shrubs, often with creeping stems or rootstocks, and 

 small leaves like those of Juniper or Savin. Sporangia usually in 

 terminal spikes. 



Name from AuVos (lucos), wolf, and ttov<> (pous), foot, to which the extremity of the 

 stem has been compared. 



SPECIES L-LYCOPODIUM SELAGO. Linn. 



Plate 1830. 

 Babenh. Crypt. Vase. Europ. No. 95. 



Stem short, not creeping, decumbent at the base, repeatedly dicho- 

 tomous ; branches erect or ascending, approximate. Leaves all similar, 

 inserted all round the stem, crowded, 8-farious, adpressed or spreading, 

 lanceolate strap-shaped, acuminated and acute, pungent or sub-pungent, 

 entire, rarely spinous-serrate. Sporangia in the axils of ordinary 

 leaves, not collected into terminal spikes, but distributed over the 

 greater part of the branches. 



Var. a. vulgatum. 

 Plate 1830. 



Leaves imbricated, adpressed, at least on the ultimate divisions of 

 the branches. 



