1822 Eu-Florideae, Corallinacese, Cheilosporunl. 



bara» (D."'* Lennebacker), « S. Cruz » (Andersox). — fornia natia 

 Setch. et Gardn. Alg. Northw. Amer. (1903) p. 359: laxe c;espitosa, 

 pusilla, rupicola, frondibus brevibus (2-3 cm.) ramis ramulisque 

 ut in forma typica pinnatim dispositis. Ex insula «Orcas» Arnericie 

 boreo-occidentalis (Gardner). 



Species a genere excludendse. 



45. Amphiroa australis Sond. in Botan. Zeitung 1845, p. 55, Harv. 

 Pliyc. Austral. t. 77, Kuetz. Sp. p. 703, Tab. Phyc. VIII, t. 50, 

 f. I, Aresch. in J. Ag. Sp. II, p. 537; cfr. Rhodopeltidem australem 

 (inter Rhizophyllidaceas). Jam clarus Kuetzing Tab. Phyc. VIII, 

 p. 25, suspicatus erat Sonderi speciem novum genus sistere, stru- 

 ctura a ceteris Amp^hiroa^ speciebus summopere abludens. 



46. Amphiroa heterarthra Trevisan in Flora XXXII (1849) n. 27, 

 p. 417, est Corallina squamata. 



47. Amphiroa heterocladia Kuetz. Tab. Phyc. VIII (1858) p. 28, 

 t. 58, f. 3. 



Hah. ad «Port Natal » Africre (Gueinzius). — Videtur, saltem 

 ex icone, Cheilospori sp., forsan eadem species ac Ch. flahellatum 

 (Harv.) ex eodem loco proveniens. 



CHEILOSPORUM Aresch. [1852] in J. Ag. Sp. II, p. 543 (Etym. cheilos 

 labrum et spora), Engl. & Prantl Natiirl. Pflanzenfam. 1897, 

 p. 543, Arthrocardia Aresch. [1852] in J. Ag. Sp. II, p. 547, 

 Amphiroa sect. IV. Cheilosporum Decaisne Ann. des Scienc. nat. 

 (1842) Bot. vol. 2, p. 113, Amphiroa sect. II. Arthrocardia Decne 

 [1842] 1. c. p. 112, Harv. Ner. austral. p. 101, Kuetz. Sp. p. 104, 

 Corallinoe, Amphiroa^ spec. auct. — Frons erecta, calcarea, fra- 

 gilissima, ima basi subteres, superne compresso-plana, dichotoma 

 aut lateraliter ramosa, e duobus cellularum stratis, corticali cellulis 

 elliptico-rotundatis et interiori cellulis elongatis in zonastransver- 

 sales superinipositas coordinatis formato constructa, articulata; 

 articuli obsagittati aut obcordati, geniculis ecorticatis brevibus 

 subadpressi. Conceptacula in margine aut apice loborum superiori 

 articulorum utrinque immersa extus tumescentia, poro pertusa, 

 cavitate ut in Corallina exoriente. Sporangia e pariete conceptaculi 

 interiori suberecta, zonatim divisa. 



Ohs. Frons in omnibus speciebus seque calcarea, fragilissima, 

 basi teres sa;peque simplex aut quasi caulescens, apicem versus 



