502 FLORA ANTARCTICA. \Fuegia, the 



59. ANABAINA, Bory. 



1. Anabaina tenar, Hook. fil. et Harv.; strato globuloso definito lobato gelatinoso fluctuante serugi- 

 noso, filis densissiuie intertextis flexuosis moniliformibus ina;qualibus liic illie interruptis, articulis plermnque 

 globosis angulatisve nunc transverse elongatis, majoribus ellipticis oblortgis limbo hyalino cinctis solitariis 

 plurimisve. Sphaerozyga tenax, nobis in Lond. Jovrn. Bot. vol. iv. p. 298. (Tab. CXCIII. Kg. III.) 



Hab. Falkland Islands ; in small pools of water on the hills. 



Stratum 1-3 unc. latum, e massis J—J uncialibus conglobatis effomiatum, gelatinosum, hyalinum, pulchre 

 seruginosum, natans. Substantia gelatinosa, sub lente oeuluni fugiens. Fila perpluritna, dense aggregata, diametro 

 varia. Articuli sub lente glauco-virescentes, opacae, inajores translucidse. 



A very distinct and beautiful species, evidently congeneric with the Spharozyga Jacobi, of which the Rev. M. J. 

 Berkeley has published an excellent figure in the Supplement to English Botany, (t. 2826. fig. 2.) but which we do 

 not consider generically distinct from Anabaina. The granular substance of the larger articuli is of a different 

 nature from that filling the smaller one, being more transparent, and confined in a proper cyst, between which and 

 the border of the articulation there is a transparent space. The stratum is as firm as that of Nostoc coeruleum, and 

 the specimens preserved resemble a dried mass of OsciUatoria. 



Specifically this differs from A. Jacobi in the form of the stratum, and from A. flos-aqua in the straightness of 

 the larger articulations. 



Plate CXCIII. Fig. III. — 1, plant of the natural size; 2, threads; 3, portion of a thread with spores ; 

 4, spores : — highly magnified. 



60. CHROOLEPUS, Ag. 



1. Chroolepvjs aureus, Harv. in Hook. Brit. Flor. vol. ii. p. 380. Conferva anrea, Bittwyn, Hist. 

 Conf. t, 35. 



Hab. Hermite Island, Cape Horn ; Kerguelen's Land, and the Falkland Islands ; very abundant on 

 the under surfaces of rocks near the sea, &c. 



One of the commonest vegetable productions in the Antarctic Islands, growing under circumstances where 

 no Lichen, or other cryptogamic plant, flourishes. It was always found near the Lecanora miniata, and is very 

 abundant in situations sheltered from the direct rays of the sun. When fresh, or rather during drying, it emits 

 a very evident smell of violets. 



2. Chroolepus ebeneus, Ag. Syst. Alg. p. 36. Conferva ebenea, Billwyn, t. 101. Byssus niger, 

 Engl. Bot. t. 702. 



Hab. Hermite Island, Cape Horn ; in clefts of rocks in the woods. 



Like the former, this species, invariably shuns the light in the south. It was found in damper places than 

 C. aureus. Both are, very probably, abnormal states of some Lichen. 



