Moore — 0)i Ir'mh HepaUcce. 603 



out pores. Fertile receptacle and involucres hairy, raised on rather 

 long peduncles, which are chaffy at the apex. Male receptacles 

 thick, carnose, and nearly sessile, beset with a number of hair-like 

 scales, which entirely cover the young receptacle, they are flat, 

 and recurve in a radiating spiral manner, tapering to a point. 

 These scale-like hairs proceed from the short peduncle, and cover 

 the base of the receptacle. 



Marchantia irrigua, Wilson, in Hook. Engl. PI. 5, 1, p. 106. Hygro- 

 phila irrigua, Taylor, in Fl. Hib. p. 54. Dumortiera, Eeinw. Bl., 

 ct Nees, in Nov. Act. Natur. Cur. 12, p. 410 ; Dumort. Hepat. 

 Europ. p. 153 (1874). 



Hab. Sheltered, shady, rocky recesses, where water is constantly trick- 

 ling over, or otherwise A^ery moist. Blackwater bridge, near 

 Dunkerron, Dr. Taylor (1820). Tore waterfall, near Killarney. 

 Maghanabo glen, near Fermoyle, Co. Kerry, W. Wilson, Esq. 

 (1829), who first published the plant as a native of the British 

 Isles, in English Flora (1833). Ballinahassig glen, near Cork, Fl. 

 Cork. Dunscombe's wood, I. Carroll. Altadore glen, near Delgany, 

 Co. Wicklow, the Right Hon. Lord Gough. We have collected it 

 in the same glen, 1872 and 1874; also very sparingly near a small 

 waterfall at Luggielaw, Co. Wicklow. This remarkable plant is 

 very local m Ireland, and only occurs in the warmest and most 

 sheltered spots. It is amenable to cultivation, and under proper 

 management produces both male and female receptacles rather 

 freely, as has been the case in the Glasnevin Botanic Gardens 

 during a number of years. 



ASTEEELLA, BcaUV. 



Marchantia, Linn. Sp. PL 1 ed., 2, p. 1138; PI. Lapp. (1753). Aste- 

 rella, Beauv. in Encycl. Meth. Suppl. 1, p. 502 (1810). Rebou- 

 lia, Eaddi, in Opusc. Scient. di Bologna, ii., p. 357 (1818). 

 Conocephalus, Dumort. Comm. Bot., p. 115 (1822). 



Moncecious. Frond rigid, with a broad and distinct midrib. Fertile 

 receptacle hemispherical, 4-5 lobecl, barbate beneath. Colesule 

 wanting. Calyptra minute, lacerate, persistent at the base of the 

 capsule. Capsule globose, rupturing irregularly. Antheridia im- 

 mersed in sessile crescent-shaped disks. 



^sterella hemisplicfirica, Beauv. Frond bilobed or dichotomously 

 divided at apex, margins crenate, depressed, more or less ob- 

 viously scariose beneath, with purplish scales. Fertile recep- 

 tacle barbate beneath and at apex of pedicel, with long white 

 silky hairs. Antheridia sessile, in crescent-shaped disks. 



Marchantia hemisphserica, Linn. Sp. PI. 1604; Smith's Engl. Bot. 

 t. 503. Asterella hemispha3rica, Beauv. Encycl. Meth. Suppl. 

 p. 502 ; Lindberg, in Not. pro. Faun. Fl. Fennica, ix. p. 286. As- 

 terella hemisphscrica, Dumort. Hep. Europ., p. 154 (1874). 



