102. LYCOPODIUM. § 1. UROSTACHYS. a'. SUBSELAGO. 35 



a.*. Leaves 6 — co-farious ('). 



3. Leaves 6 — 8 mm. long, mostly rigid. 



•. Leaves canaliculate (involuto-conduplicate). (16) L. laxum. 

 •■•• Leaves flattened. (17) L. gunturense. 



3.3. Leaves 10 — 15 mm. long, thin to moderately firm, 

 s. Leaves ascending. 



S. Leaves about 1 — VU mm. broad. (18) L. carinatum. 

 S.S. Leaves about Vk—2 mm. broad. (19) L. proliferum. 

 4.*. Leaves horizontal or spreading. (20) L. ulicifolium. 



1.1. Leaves 15 — 25 mm. or more long; spikes 7^k — 15 mm. diam. 



(21) L. Dalhousianum. 



(15) li. tetrastichum, Jir*e,« ? L. carinatum, Desv., var. laxum, 

 Christ, Fil. Saras., IV, 447; L. Sarasinorum, Christ, 1. c, I, 34; II, 217, 

 tab. II, fig. 11—12. 



Shoots pendulous, 40 — 60 long, mostly once or twice forked, the stem 

 and branches square, 4 — 6 mm. diam. including the leaves. Leaves 

 4-farious, ascending, close, 5 — 8 mm. long, conduplicate, 3 — 4 mm. 

 broad when flattened, acute, entire, firm but not rigid, broadly decurrent, 

 with a decurrent keel. Spikes double, square, 5 — 20 mm. long, 2 — 3 mm. 

 diam. ; sporophylla triangular-ovate, acuminate, keeled, about Vj as long as, 

 and relatively broader than, the barren leaves. — The description is taken 

 from specimens occurring in the Buitenzorg Herbarium, the original 

 diagnosis being unavailable to me. 



British India to Polynesia. 



(16) li. laxum. Spring, Mon., I, 60; L. carinatum, Desv., Rac, 

 Flor. Btz., I, 239, p. p. 



Shoots pendulous, 35 — 100 cm. long, often 2 — 3 times dichotomously 

 branched, the stem and branches 4 — 6 mm. diam. including the leaves. 

 Leaves much ascending, 6 — 9-farious (arranged in spurious whorls of 3), 

 imbricate, rigid, acerose, subulate, 6 — 8 mm. long, IV4 — 2 mm. broad 

 at the base, acute, entire, canaliculate-conduplicate above, distinctly keeled 

 or costate beneath, the very base slightly narrowed, decurrent. Spikes 



(') See also (24) L. squarrosum Forat. and (29) I,, plnlfollum 



Bl. 



