88 



:.m^ in Descrizionc >li Genova i del Genovesato, vl. I. pai II 

 ilc, pp. 



Lil.. Phyc. VI. 1856 p. 29. tab. 85, I. 

 Notaris fide Kützing loc. cit. p. 30. 

 Woronine in Ann. Sn. N.it. .)"" sér. tom. XVI. 1862 p. 20S, pi. io, 11. 

 Woronine loc. cit. 

 1 olmeiro Enum. Crypt. Esparta y Portugal II. 1867. p. 

 1 tnea J. G. A .u. lh l'ill Alg. Syst. \'. 1SS7 p. 57, 

 ' tnea De 1 < • n 1 Syll. Alg. vul. I. 1889 p. 500. 



MEDITERRANEAN. Villa Franca, Kisso (sub "Espera mediterranea Dne". in Decaisne's hand- 

 writing), //t/V'. Mus. Paris\ — Cannes, Herb. Thuret\ — Cannes, Lagerheitn in W'ittr. & 

 Nordst. Alg. Exsicc. n° 1019! — Antibes, in Herb. Mus. Brit.\ — Cannes, Antibes, N 

 and Genoa, Herb. Thuret\ 



forma perfecta. 



Hab. MEDITERRANEAN. Antibes, Herb. TAuretl 



1'lant varying much between a non-stipitate form tufted likc Chlorodesmis and a stipitate 

 Penicilloid form, both calcified 



forma typica. 



Plant about 2.5 — 12.5 cm. high, consisting at base of a densely felted mass of branches 

 and rhizoids, and of a coma of free and radiating filaments above, about 2 — 2.5 cm. long. 

 basal filaments not encrusted, irregularly branched and emitting slcnder colourless branched 

 rhizoids; upper filaments lightly encrusted, hut green towards apices, repeatedly dichotomously 

 branched, branches constricted at base, about 100 — 1 20 -;. in diam. [Figs. 1 70, 177]. 



forma perfecta. 



Plant about 2.5 — 8 cm. high, solitary or two or more arising from a thickened base, 

 stipitate, capitate; stipes 0.5 — 3.5 cm. long, about 2 mm. thick, simple, terete, hard, thickly 

 encrusted, smooth, appearing minutely pseudojjorose under microscope. Capitulum pyriform, 



»nic or almost globose, about 2 — 2.5 cm. long, about 1 — 2 cm. wide; filaments encrusted, 

 about 7 mm. long, 200 — 160 u in diam., dichotomously branched. Filaments of stipes bearing 



al appendages 2 — 3 times dichotomousl\- divided and terminated by very smal! short 

 truncate apices. approximated together to form a cortex, which is hardened with a calcareous 

 deposit. Figs 178 — 180]. 



This species lias been hitherto placed by most systematists in a separate genus, Espera, 



which was founded by I '1 ■ usni doe cit.) on a specimen collected by Risso at Villa Franca, and 



s.-nt i" l»i- usni by J. G. Agardh (PI. XX, fig. 17'')- In the few collections of /'. mediter- 



that we have seen, there lias been no plant which reaches the siz<- of Dei usne's t\'i>e- 



imen, the length of which measures 125 cm. It ronsists of an abnormally large mass 



of a multitude of slightly calcified, free, ascendin<^ filaments, arising from a thick. 



itted base. 



