FKKS ii-\v.\ TI: i: AI.II.I: OK TIM: r NIT KD STATES. 61 



Tin 1 branches are nearly alwajs short, and divergent from their united bases. 

 The h. tl have frequently one of their ends rounded; and are quite 



numerous. This species corresponds too closely to Uabenhorsfs description of 

 ti-i/tonnna tlfi-iiinli to lie separated, but it is possible a comparison of spccin 

 illicit show decided differences the description of the European form is not \< i\ 

 full. The American plants seem to approximate most closely the \'<ir. uitistttni. 

 1 have seen a single hranch ^iu'ii off only in one instance. 



I _:. 1, pi. (!, represents a filament of this species magnified 'JdO diameters; fig. 

 1 /', the outline of a hcten>c\st magnified 7.">0 diameters. 







V Myo< liroiiv A.. 



S. strata triiui, patiMMso-tomcntoao, obtcurc fusco (nonnuiiqtiam subsericeo) ; trichomntibas 



vali<li"imi>. CUM-!*, Im-idis, li-niii-r rurvatix, ail-ri-inlrniil.il-. intcrnis :iTiijriin-i-, apicc (articul. 

 trriu ."('.) riil Hi-, ili-tiiictc uriii-iilatis ; |iM'u<loraiiiulis pk-ruuuine gcminis, Bicpc longiKsiraiii 

 11. i .-, tricliniiiuti' iliiniilici cir.-.ti r trnuuribus ; tric-hoiuatis vaginis crassis, distincto 



luini-llosis, liruii.-. puli-lirr iuic.i-i'iiM-i>. gu|H>rficic laeTinaimis, ramulornm semper pallitliuribus 

 (lull-is, rariiis aclirois), apiro SB-JIC achrois, clauais et olituso-rotundatis; i-cllnlis penlu- 

 ruutilxis olilongig rel Hubcyliinlricis, achrois, trichomatis intern! diametro gabicqualibus. 

 i I: i Mr. it.. ..I. -cure nlivacro, tricliomatibus parcc pseudoramnKiii, ad Jf'" crasnis ; pRrudo- 

 niiiniili.s singulix, vaginis aclirois vel luteolis; Tag. tricb. lutoo-fuacis. (1C) Species mihi 



m. Trichom 0.0011" 0.0014"; raraulorura ad O.OOOG8". (R.) 



.s',/,, s. M'jochrous, AQARDII ; Var. Contextum, CARMICIIAEL. RABENHOROT, Flora Europ. 

 Algarum, Sect. II. p. 254. 



'.. " Foot of Crow's-nest, West Point" Bailey. Silliman's Journal, N. S. Tol. iii. 



Stnito thin, pannoscly tomentose, obscurely fuscous (sometimes somewhat silky); filaments very 

 strong, fuscous, bright, slightly curved, ascending; the internal eeruginous, distinctly articu- 

 late with the apex (terminal 5-6 joints) reddish ; branches mostly geminate, often very ln?r, 

 flarcidly erect, about one-half thinner than the filament; sheath of the filament thick, dis- 

 tinctly lamellate, firm, beautifully yellowish-fuscous, surface very smooth ; sheath of the 

 branches always paler (luteons or rarely colorless) with the apex colorless, short and obtusely 

 rounded ; heterocysta about equal in diameter to the internal filament Stratum obscurely 

 olivaceous, filaments sparsely branched, iilxmt ,'j'" thick ; branches single, with the sheaths 

 transparent or yellowish ; sheath of the trichoiua lutco-fuscous. 



S. calolrirhoideN. 



S. cn-spitosum, mucosum, plernmquc cnm algis variis intermixtum; trichomatibus plus minus 

 cnrratis; pseudoramulis plernmquo geminis, varie curvatis, simplicibus, clongatis; tricho- 

 matibus internis modo distinctc articulatis, modo inarticnlatis, interdum moniliformibns, 

 luteo-viridibns rel emgineis, grannlosis ; articnlis plernmque diamctro brevioribus scd in- 

 terdum permnlto longioribus, baud rare vel snbglobosis vel valde compressis ; cellnlis pcr- 

 durantibus sinjrulis, subcylindricis; vaginis plernmqne pellucidnlis, distincte lamellosis, in 

 triclioinntilms plommque rubido-vel luteo brunneis sed interdnm colon's expertibus, in pscu- 

 doramnlis hyalinis, coloris expertibus vel dilutissime Inteis vel dilute lutco-brunneis. 



fliam. Cnm vag. max. ,Boo"~- 00075 " plernmque IB * OB "=. 00045"; sine vog. TiVn' n'oo"? 

 pseudoram. ,^ Bff " - .0005". 



,S'i/n._S. calolrichoides, KTZ. RABENHORST, Flora Europ. Algarum, Sect. II. p. 252. 

 //,,/,._Soutb Carolina. (Ravcnel.) 



