XXX11 SYNOPSIS OF THE SPECIES. 



265. fasciculatum j plumules long, erect, linear-obovate, truncate; pinnae 

 flexuous, the lower simple, appressed, the upper erecto-patent, ramulose 

 near the tip ; articulations of the branches veiny, thrice, of the ramuli once 

 or twice as long as broad, with contracted dissepiments. (Tab. CCCVIII.) 



266. Borrerij much branched, sub distichous, slender; branches set with 

 plumules which are bare of ramuli in their lower half, and simply pinnate 

 in their upper ; pinnae patent ; articulations of the branches 2-5 times, of 

 the pinnae twice, as long as broad ; tetraspores roundish, sessile on the 

 inner face of the pinnules. (Tab. CLIX.) 



267. affinej much branched and bushy; stem veiny; secondary branches long, 

 densely plumulate ; plumules very narrow, simply pinnate ; pinnae short, 

 erect, the upper longest, crowded at the tips ; articulations of the branches 

 3-4, of the pinnae once and half as long as broad ; tetraspores solitary, 

 super-axillary. (Tab. CCCXXXI.) 



268. tripinnatum $ distichous, capillary, decompound-pinnate; plumules ob- 

 ovate, tripinnate above ; the lower pinnae short and abortive ; each pinna 

 having at its axil a minute pinnule ; tetraspores oval, lateral on the axillary 

 pinnules. (Tab. LXXVII.) 



269. gracillimum j distichously branched, fan-shaped; stems capillary, decom- 

 posito-pinnate ; plumules bi-tri-pinnate ; articulations of the stem 3-4, of 

 the pinnae 2-3 times as long as broad ; tetraspores terminating the ultimate 

 pinnules. (Tab. V.) 



270. thuyoideum ; capillary, distichously decompound, and repeatedly pinnate; 

 plumules bi-tri-pinnate, lanceolate; articulations variable; tetraspores on 

 the tips of the ultimate pinnules. (Tab. CCLXIX.) 



* * * * Stems articulate ; branches and ramuli dichotomous. 



271. corymbosumj setaceous below, byssoid above, excessively branched; 

 lesser branches repeatedly dichotomous, level-topped ; ramuli many times 

 forked; articulations of the branches 8-10 times as long as broad; tetra- 

 spores solitary and axillary, sessile. (Tab. CCLXXII.) 



272. spongiosum j stems robust, opake and veiny; branches quadrifarious, 

 thickly clothed with dichotomous ramuli ; axils patent ; apices bifid ; ar- 

 ticulations of the branches swollen at the joints, twice or thrice as long as 

 broad. (Tab. CXXV.) 



273. pedicellatum j setaceous, pellucid, jointed throughout, irregularly divided; 

 lesser branches dichotomous ; apices very obtuse ; articulations several 

 times as long as broad; tetraspores stalked, pear-shaped, axillary. (Tab. 

 CCXII.) 



***** oj sma u s ' bze and densely tufted, or minute parasites. 



274. Rothiij widely spreading, densely tufted ; filaments very short, subdicho- 

 tomous ; branches very erect, straight, simple ; articulations twice as long 

 as broad ; tetraspores oval, clustered, on short subterminal, corymbose ra- 

 muli. (Tab. CXX. B.) 



275. floridulumj tufts very dense, globose, fastigiate; filaments slender, di- 

 chotomous ; branches very erect, straight, simple ; articulations thrice as 

 long as broad ; tetraspores oval, on short secund pedicels, along the 

 branches. (Tab. CXX. A.) 



276. mesocarpum; rising from creeping filaments; stems erect, subsimplc; 

 branches alternate, very erect, naked or nearly so ; articulations 4-5 times 

 as long as broad ; tetraspores elliptical, on long, simple or forked, lateral 

 pedicels. (Tab. CCCXXV.) 



