Lgcopodium.] lycopodiace^e. 487 



centric and indented on the back ; the inner leaves rather smaller, Avith more 

 prominent points. Spikes veiy short ; the bracts nearly similar to the inner 

 stem-leaves. — Selaginella involvens, Spring, Monogr. Lycop. ii. 63. 



Hongkong, Champion, Wright. In the Indian Peninsula, the Archipelago, the Philip- 

 pines, China, and Japan. 



3. I*. atroviride, Wall.; Hook. Gen. Fil. t. 117 B. Stems trailing 

 and rooting among the leafy branches, dichotomous from the first or the 

 primary branches irregularly pinnate. Leaves usually dark-green and shining, 

 in four rows ; the outer distichous ones very regularly spreading, 1^ to 3 lines 

 long, obliquely oblong-falcate, scarcely pointed, often minutely punctate on 

 the upper side, pale underneath, often but not always with a lateral nerve on 

 each side of the midrib. Inner leaves from \ to ■§■ as long, fine-pointed, semi- 

 cordate at the base, closely appressed to the rhachis and parallel or slightly 

 diverging. Spikes \ to 1 in. long ; the bracts ovate-lanceolate, fine-pointed, 

 imbricate in 4 rows. — Selaginella atroviridis, Spring, Monogr. Lycop. ii. 124, 

 and S. monospora, Spring. I.e. 135. 



In ravines, Harland, Urquhart, Wright, Wilford. In India from Ceylon and the Pen- 

 insula to the Archipelago, and northward to the Himalaya, Fooehowfoo, and Chusan. The 

 specimen of Hance's, referred by J. Sm. (in Seem. Bot. Her. 431) to Selaginella concinna, 

 Spring, appears to me rather to belong to the present species. 



4. L. caudatum, Desv. Stems trailing to a considerable length and 

 rooting among the leafy branches which are loosely pinnate from the base. 

 Leaves in 4 rows, the outer distichous ones obliquely ovate or oval-oblong, 1 

 to 2 lines long ; inner ones | to f as long, semicordate at the base, falcate, 

 fine-pointed and converging over the rhachis. Spikes 3 to 9 lines long ; the 

 bracts keeled, fine-pointed, imbricate in 4 rows. — Selaginella caudala, Spring, 

 Monogr. Lycop. ii. 139. S. argentea, Spring?; Sm. in Seem. Bot. Her. 431. 



Abundant in ravines, Urquhart, Wilford, Wright, frequent in India and the Archipelago. 

 This species appears to me to include a considerable number of forms described by Spring as 

 distinct species. 



5. Li. flabellatum, Linn. Ehizome creeping and rooting to a great 

 extent, emitting erect leafy branches, simple for 2 to 4 in., then expanding 

 into an ovate- triangular form about 6 in. long; the branches about twice 

 pinnate. Foliage nearly of L. caudalum, or the outer leaves more distinctly 

 falcate. Spikes precisely as in L. caudatum. — Selaginella Jlahellif era, Spring, 

 Monogr. Lycop. ii. 174? S. argentea, Spring, I.e. 154? 



Hongkong, Harland, Wright. In the Philippines, the Indian Archipelago, and in tropi- 

 cal America. Sir W. Hooker cousiders this to be the true L. flab ell atum, the specimens 

 agree well with Spring's character of L. argentea, and probably S. caulescens, Wall., and 

 several others are mere forms of it. The species of the Selaginella section have been im- 

 mensely multiplied upon characters extremely difficult to appreciate, especially in dried speci- 

 mens, and apparently very variable in nature. 



2. PSILOTUM, Sw. 



Stems dichotomous, with few very minute distant scale-like leaves. Cap- 

 sules distant, sessile upon minute bifid bracts, 3-lobed, 3 -celled, opening locu- 

 licidally in 3 valves, containing numerous minute spores. 



A small tropical and subtropical genus, common to the New and the Old World. 



1. P. triquetrum, Sw.; Hook. Gen. Fit. i. t. 87; Ml. Exot. t. 63. 



