324 
rarius plus quam 5plo longiores, superiores idem subaequan- 
tes; genicula tenuiter corticata. Spinulae e basi lata, intus 
cellulis purpureis repletae, acuminatae, i. e. subtriangiilares, 
ad exterius tantum forciparum latus obvia, ad genicula solita- 
ria. Peritetragonidia prominenti-exserta, \ erticillata , obovata. 
XXXI. GRIFFITHSIA. 
Thallus capillaris 1. filiformis, unica cellularum serie con- 
structus, ecorticatus. Sporocarpia excipulo unicellulari, Sporas 
conglobatas foventia, ramulis involiicrata. Peritetragonidia in- 
tra involucrum ramulis verticillatis formatum recepta. 
I. Griffithsia corallina Linn, 
Thallo irregulariter dichotomo, cellulis diametro 2 — 4plo 
longioribus superne incrassatis, geniculis contractis, involucro 
peritetragonidiorum ex apice cellularum egrediente. 
Conferva corallinoides Linn. Sp. PL ed. 2. v. 2. p. 1655. 
corallina Lightf. FL Scot, p. 82. (^g-J 
Griffithsia corallina Ag. Sp, p. 127. 
In fundo extrataeniensi limoso conebifero 1. petroso 
ostreifero, a Bahusia infima, v. c. ad Kladesholmen, usque in 
Koster, ubi in fundo Segesåta optima; in mari Xorvegico pro- 
pe Christiansund mihi obvia. Jun. — Aug. 
Planta elegantissima, coloris metallico-nitentis, aureo-rubri , 
usque 6-pollicaris. Et Sporocarpia et tetragonidia in planta 
Bahusiensi optime adsunt. 
