120 Myxophj^ceae. Chamaesiplionacefe, Pleurocapsa. 



6 Gonidia apice gonidangii constrictione succedaneri genita. 



Cha^ncesipJion A. Br. et Grun. — Gonidangia ovalia vel cylindrica. 

 Godleioskia Jancz. — Gonidangia clavata. 



PLEUROCAPSA Thur. [1885] iii Hanck Meeresalg. Deutsclil. p. .515 

 (Etym. pleura latus et capsa capsa seu theca), Hansg. Physiol. u. 

 algol. Mittheil. p. 88, 91. — Stratum hydrophyticum vel aerophy- 

 ticum, plerumque crustaceum, ex cellulis vegetativis et gonidangiis 

 constitutum: celluke lilamenta hrevia, parallela vel fere indistincta, 

 radiosa fingentes sa^pe dichotomice divisa. Celluke vegetativse glo- 

 bosa3 vel angulat:i2, raro ovales vel polyhedricte secus tres directiones 

 alternatas divisoe, membrana tenui pmeditse, in familias globosas vel 

 racemosas, irregulariter lobatas consociatie, contentu c^eruleo vel 

 viridi-olivaceo, raro sordide violaceo vel luteolo granuloso sgepis- 

 sime formam nucleum fingentem inglobante; cellulse majores (go- 

 nidangia), membrana crassa nec lamellosa dotatse, gonidia nume- 

 rosa sphasroidea gignentes. Reproductio fit: I. gonidiis immobilibus, 

 divisione contentus in sphajricis gonidangiis ortis, 4-32 numero; 

 H. divisione cellularum vegetativarum; IH. divisione filamentorum 

 in fragmenta uni- vel pluricellularia individua nova filamentosa 

 efficientia. 



Subgen. I. Cyanodrrma Hansg. (non Weber v. Bosse), Eucyanoderma Hansg. in 

 Notarisia 1888, p. 588. — Strato aeropbytico, 



1. Pleurocapsa tnuralis I^agerh. in Wittr. et Nordst. Alg. aq. dulc. 

 exsicc. n. 1097! — Stratum pulveraceum, nigrum, siccum formans; 

 cellulis vegetativis globulosis vel mutua pressione paullo angulosis, 

 solitariis vel colonias paucicellulares formantibus, 4-6 [i. diam., 

 contentu pallide ierugineo, membrana achroa vel ardosiaca, tenui 

 non gelatinosa; gonidangiis globosis vel globoso-angulatis, G-8 (i. 

 diam., gonidia pauca includentibus; gonidiis plerumque quatornis, 

 angulato-globosis, 3-4 jx. diam. 



Hah. in muro calcareo horti botanici urbis Quito /Equatoriie 

 (Lagerheim). 



^uhgen. II. Myxoderma Hansg. in Notarisia 1883, p. 588. — Strato aquatico. 



2. Pleurocapsa Usteriana Schmidle Einige neue Algen a. Java und 

 den Philippinen in Hedwigia 1904, Hft. G, p. 44. — Cellulis ro- 

 tundatis vel sphairico-oblongis, sa)pe e mutua pressione angulosis, 



305 



