120 Underwood and Lloyd: Lvcopodium 



IULIFORME GROUP 



35. Lycopodium iuliforme sp. nov. 



A low plant with short close-creeping stems and rigid upright 

 monostachyous branches. Creeping stems 6-10 cm. long or 

 more, with numerous roots throughout; leaves in 10 or more 

 ranks, those of the lower surface pale, narrow, and somewhat lax, 

 2-2.5 mm - l° n g> triangular-subulate from a wider base, those of 

 the lateral surfaces ascending, twisted, 3-5 mm. long, somewhat 

 rigid, ending in a firm acuminate point ; erect branches terminal, 

 or becoming apparently lateral from the innovating branches of 

 the prostrate stems, 9-12 cm. high, leafy throughout, the leaves 

 mostly 8-ranked, rather rigid, slightly spreading, 4-5 mm. long, 

 lanceolate-acuminate ; strobiles 3-3.5 cm. long, slightly thicker 

 than the stems ; sporophyls 8-ranked, lanceolate above from a 

 broad base, the rigid apices wide-spreading ; sporangia reniform, 

 1.5 mm. wide, entirely concealed by the broad base of the 

 sporophyls. 



Guiana: Summit of Roraima, 8,600 ft., McConnell & Quelch 

 5J2. (Type at the New York Botanical Garden.) 



A unique species forming a series of its own, intermediate in a 

 way between the Inundatum group and the Carolinianum group. 

 It was reported upon by C. H. Wright (Trans. Linn. Soc. II. 6: 

 87. 1 90 1 ) as L. contigiaim Kl., with which it has only a remote 

 alliance. L. contiguum has membranous-tipped leaves and spor- 

 ophyls, the latter soft, lax, and wide spreading, and with con- 

 spicuously erose margins. 



§ 3. DIPHASIUM 



The members of the section Dipkasium, which forms a physio- 

 logical rather than a structural alliance, will group themselves 

 somewhat naturally as follows : 



Vertical stems simple; foliage shoots prostrate, creeping, the leaves of the two under 

 rows larger and appearing lateral. Carolinianum Group. 



Vertical stems much branched. 



Terminal foliage shoots with 4 rows of dimorphous leaves ; upper surface with one 



row of leaves. Complanatum Group. 



Terminal foliage shoots with c (nr f\\ rowc c\f ia 4 v»e *u« «^^«^ *.„~f„~« ,.,;*v. fV» *-*»*». 



rows of reduced leaves. 



Scariosum Group. 



CAROLINIANUM GROUP 



The species of this group were referred by Baker to our 

 familiar L. carolinianum of the Southern States, but will readily 

 separate themselves into at least three species as follows : 



i 



