ASrEROCOCCUS. 



[ ^1 ] 



ASPIDISCA. 



A. aureusi Berk. Sporidia large, ellipti- 

 cal, thinly scattered, golden-yellow ; fertile 

 filaments without septa. On bark. Now 

 referred with A. mirantiacus, from which 

 it scarcely diiFers, to the genus Rhinotri- 

 c/mm. 



A. auranfiacus, Berk. Sporidia oval, 

 the lowest of the chain much larger, myce- 

 lium rusty orange, the heads often prolife- 

 rous, so as to produce a complicated mass. 

 On bark. Ann. X. If. vi. p. 430, pi. xiii. 

 fig. 22. Nematogonium aurantiacum, 

 Desmaz. Ann. des Sc. Nat. 2 ser. ii. p. 69, 

 pi. 2. fig. 1. 



** Fertile Jilaments branched. 



A. maximus, Lk. Sporidia very large, 

 at length yellow-brown, mycelium a fleecy 

 mass of the same colour ; fertile filaments 

 dichotomous, clavate above. On decaying 

 Fungi. 



A. moUh, Berk. Sporidia large, sub- 

 globose, white, mycelium white ; fertile 

 filaments dichotomous, standing in minute, 

 scattered, white bundles. 



A. virens, Lk. Sporidia, like the fila- 

 ments, greenish ; tufts of fertile filaments 

 rather dense, entangled, suberect. On de- 

 caying fungi and other bodies. 



"a. alternatus, Berk. Sporidia grey- black, 

 . subtruucate ; fertile plants branched alter- 

 nately in a zigzag manner, erect or decum- 

 bent,"forming extremely minute orbicular 

 patches on damp paper. Ann. N. H. 1838, 

 i. p. 262, pi. 8. f. 11. 



A. ditbius, Corda, would appear to differ 

 generically from the above. Mr. Berkeley 

 states that its capitular cells bear linear- 

 processes, each surmounted by four sterig- 

 mata, on which are attached the chains of 

 spores. On dung. Corda, Ic. ii. t. 11. 

 fig. 77. 



BiBL. Berkeley, Hooker^ s Br. Fl. ii. part 

 2, p. 349 ; Ann. K. II. i. 262, vi. 436, 2nd 

 ser. vii. 100; Crypt. Bot. p. 298; Fries, 

 Syst. Mycoloy. iii. 383 ; Corda, Ic. Fimy. ; 

 Robin, Parasites, p. 515. 



ASPEROCOC'CUS, Lamour.— A genus 

 of Dictyotacese (Fucoid Alga?), of which 

 three species are found on the British coast. 

 The fructification consists of groups of spo- 

 ranges (commonly called spores), intermixed 

 with paraphyses, scattered over the whole 

 suriiice of the frond. When mature these 

 sporanges discharge zoospores. 



BiBL. Harvey, Mar. Alyc, 2nd ed. p. 42, 

 pi. 8 C. ; Phyc. Brit. t. xi., Ixxii. and cxciv.j 



Thuret, Ann. Sv. Nat. 3 s.5r. xiv. p. 238 ; 

 Derbes and Solier, ibid. p. 208, pi. 34. fig. 11. 



Fig. 44. 



Fiff. 45. 



Asperococcus Turneri, Dillw. 

 Fig. i\. Fronds, reduced to one third. 

 Fig. 45. Fragment of ditto, magnified 50 diameters. 

 Fig. 46. A section at right angles to fig. 4.i, showing the 

 sporanges and paraphyses, magnified 50 diameters. 



ASPIDIE'.E.— A family of Polypodi- 

 aceous Ferns, with indusiate sori. Genera: 



Didymocldcena. Sori elliptical, intramar- 

 ginal, terminal on a veinlet ; indusium ob- 

 long-elliptical, emarginate at base, attached 

 to the linear receptacle, free at edge. 



Aspidiiim. Sori rounded, dorsal or ter- 

 minal ; indusium orbicular, peltate. 



Nejyhrodium. Sori rounded, dorsal or ter- 

 minal; indusium cordato-reniform, attached 

 by the sinus. 



Ncphrolejns. Sori round, arising from 

 the apex of the upper branch of a vein, 

 generally near the edge ; indusium roimdish 

 or reniform ; veins free. 



Oleandra. Sori round, in a rovs^ near the 

 base of the compact free veinlets ; indusium 

 reniform. 



Fadyenia. Sori oblong, biserial, termi- 

 nating free veinlets ; indusium large, sub- 

 reniform, attached by the centre, free at 

 margin. 



BiBL. See Ferns. 



ASPIDIS'CA, Ehr.— A genus of Infuso- 

 ria, of the family Aspidiscina. 



Cliar. That of the family. 



A. {Trichodn, Mull.) hjnceiis (PI. 30. fig. 

 15 a, under view). Carapace suborbicular, 

 truncated posteriorly, uncinate anteriorly; 

 aquatic, among Confervce, &c.; length 1- 

 liOO to 1-560". 



A. dentindata (PI. 30. fig. 15 6, side 

 view). Carapace suborbicular, rounded at 

 the ends, truncate and denticulate on the 

 left side; aquatic; length 1-560". See 



OxiTEICHA. 



