Lemania.] algje INARTICULATE. 321 



9. V. ccespitosa, Ag. (tufted Vaucheria); filaments csespitose, 

 branches secund fructiferous at the apex, vesicles sessile glo- 

 bose, intermediate horn-shaped process straight or curved. 

 Carm. — Lyngb. Hydroph. Dan.]). $\.t. 23. Hook. Scot. P. II. 

 p. 92. Ag. Sp. Alg. v. 1. ;;. 4G8. Grev. Alg. Brit. p. 194.— 

 Ectosperma caspitosa, Vauch. Conf. p. 26. t. 2. f. 4. — Conferva 

 a in phi bid, Dillw. Coif. t. 41. 



On damp earth. 0. Spring — Autumn. — "This occurs in a thin, 

 green stratum, spreading over the earth ami inseparable from it. Fila- 

 ments short, flexuose, dichotomously branched ; ramuli on one side, sub- 

 erect, bearing two sessile globular vesicles, with a short, straight or often 

 curved intermediate process." Carm. A1SS. 



54.? Botrydium. Wallr. Botrydium. 



Plant a spluerical vesicular receptacle, filled with a watery 

 fluid, dehiscent at the apex, terminating below in a radicating 

 tuft of fibres. Grev. Alg. Brit. p. 195. t. 19. — Name; fiords, a 

 bunch cf grapes, which a cluster of the plants somewhat re- 

 sembles. 



1. B. granulosum, Grev. (grain-like Botrydium), — Grev. Alg. 

 Hi it.]>. 196. £. 19. — B. argillaceum, Wallr. — Vaucheria granu- 

 lata, Lyngb, Hydroph. Dan. p. 78. — V. radicata, Ag. Sp. Alg. 

 v. I. p. 465. Hook. Scot. P. II. p. 93. — Viva granulata, Linn. — 

 Light/'. — Tremella granulata. 11 mis. — E. Boi. t. 324. 



On the ground, in moist shady situations, probably not uncommon, 

 though few localities are published. 0. Spring and Autumn. — Plants 

 about the size of mustard-seed, aggregated, consisting of green vesicles 

 sunk as it were into the soil, rooting below, filled with a fluid, which, 

 ** when pressed, descends into the root." (Carm.) The membranous 

 coat has internally a number of small granules. In dry weather the up- 

 per part of the vesicles collapses, Mnks in, and the vehicles become cup- 

 shaped. 



TltlBK XIII. Lim ami: 1 . 



Aquatic />l<n,ts. existing in fresh <n,,l rapidly running water. 

 Fronds slender, tubulose, "tin r whorled with papilla or moniUform, 

 formed of a coriaceous cellular membrane, fin alls regular, inter' 

 spersed with cellular ducts. From scattered points obscurtly con- 

 spicuous even externally, upon this membrane, and on its interior 

 surface, tin re arisk fascicles of minute, simple or dickotomous, mom- 

 hform, ,nt, nihil,, I threads; tic articulations elliptical, h,i,,,jthim- 

 •i I,-, s the a ' ds or spot idia , separating in age andg\ rminating. . [g, 



.').'). Lim wi \. 11, ,rii. Lemania. 



Frond filiform, torulose or inflated at intervals, coriaceous, 

 c e l l u l a r . Seeds or sporules bended, collected into pencil-shaped 



tufts, mid fixed U) fhe inner surface of the hollowed pail of 

 the frond — Named in honour of a lYemh BotfJlisI and Apo- 

 logist, M. La nan. 



