MyxophyceaB, Rivularia^^ese, Leptocii«t6. hO^ 



2eitschr. 1900, p. ?A, Hedwigia 1900, pag. 173, t. IX, f. 4-8. — 

 Thallo csespitoso, expanso, epiphytico, multistratoso, subtili e multis 

 cellulis 2-4 [x. diam., spha^ricis, irreguhiriter dispositis 2-4-6 iu 

 stratuin juxtapositis; fihinientis ascendentibus, periplierice aggrega- 

 tis, subtilibus, initio circ. 1,7-2 [i. diam., a^rugineo-viridibus, more 

 stratus horizontalis, membrana hyalina, basi hiteola, circ. 120-200 

 (x. longis, apice non attenuatis, cellulis brevibus, rectangularibus, 

 parietibus tegumenti inconspicuis, deinde basi incrassatis, usquo 

 ad 4 [x. diam., vaginis evidentioribus et cellulis torulosis; filamen- 

 tis gradatim apicem versus attenuatis, usque 2 [x. diain. 



Hab. in foliis arborum epiphytica in horto «Victoria» urbis 

 «Bombay» Tndite (HANSOiRa). 



6. Leptochaete stagnalis Hansg. in N. Notarisia (1888) p. 399, Prodr. 1366 

 H (1892) p. 38, (1893) p. 54. — Strato suborbiculari vel irrega- 

 lariter expanso, sajpius maculiforini, tenui, aerugineo; trichomatibus 

 dense aggregatis, erectis, parallelis, in parte basali ad 3-4,5 [a. 

 crassis, apicem versus paullum attenuatis, cuspidatis vel subtrun- 

 catis, distincte articulatis, articulis diamatro suboequalibus vel sub- 

 duplo brevioribus, vaginis tenerrimis, arctis, hyalinis, contentu aeru- 

 gineo; substrato tenui, e cellulis chroococcoideis forsan acinetis? 



(cfr. Hansg. Prodr. II, p. 54, f. 18, L. nidulantem proebens) dense 

 aggregatis composito. 



Hab. in stagnis una cum Chietophora eleganti, lapides 

 etc. submersos obducens, in pratis ad Cimelic Bohemise. 



SecHo II. XANTiioCHiBTE Nob. — Species vaginis flavis vel levltei- brunnels 

 Instructse. 



7. Leptochaete nidulans Hansgirg in Oesterreichische Botanische Zeit- 1367 

 schrift 1887, p. 121, Prodr. II (1893), p. 54, f. 18, in Nuova Notar. 

 1887, p. 342. — Thallo minutissimo in massa gelatinosa Clathrocy- 

 stidis ffiruginoste et Microcystidis flos-aquae nidulante ; trichomatibus 

 substrictis vel parum curvatis, subparallelis, coespitoso-congregatis, 

 raro solitariis, brevibus, basi ad 2-4,5 ^. crassis, 15-45 \s.. longis, 

 apire subhyalino subulatis, indistincte articulatis; articulis basal., 

 diametro subaequalibus, pallide ;T3rugineis ; vaginis arctissimis, lu- 



teis vel aureo-fuscescentibus, trichomatum longitudinem non ne- 

 quantibus. 



Hab. in lacubus ad superficiem aqucne quietre natans, socia Cla- 

 throcystide aTuginosa Henfr., ad Bystric prope Beneschau Bohemi?e 



