UMBELLIFER.E. y^-, 



thick and perpendicular root, clothed with dilated and oppressed, 

 densely imbricated petioles. Many of these are destitute of lamina : 

 towards the summit of the stems, however, they usually bear a very 

 small and three-parted lamina, which is bearded inside, at least when 

 young, either sparsely or copiously, with long and filamentous bristles; 

 its segments ovate and entire. From the summit of some of these 

 stems, when sterile, arise more or less open shoots, bearing spreading 

 leaves with longer and narrower petioles, terminated by a lamina of 

 one or two lines in diameter, its three lobes again three-cleft. Umbel 

 subsessile and included among the leaves at the summit of the fertile 

 stems, 2-5-flowered; the flowers and fruits on short pedicels, but 

 raised only slightly above the level of the dense mass of leaves. 

 Involucre of 4 or 5 small and scarious lanceolate leaflets, unequal, 

 scarcely if at all united at the base, about the length of the pedicels. 

 Calyx glabrous; the teeth oblong, persistent. Fruit four-lobed; the 

 mericarps obovate-orbicular, or oval, a line and a half long, nearly 

 piano-compressed, except that the broad and thickened margins are not 

 unfrequently more or less recurved, so as to render the mericarp con- 

 cave on the back and leave wide sinuses at the commissures. The 

 substance of the pericarp is thick and corky, destitute of vittae, with 

 no utricular epicarp, the 5 slender ribs usually evident. Not unfre- 

 quently the fruit has three mericarps; each of just the form of those 

 of Bolax glebaria, except that they are more compressed. The plant 

 exudes a resin as copiously as the Balsam Bog and Laretia. 



Azorella bolacina, Clos, 1. c, of which I have not the fruit, is appa- 

 rently nearly allied to the present species. Its leaves are sometimes 

 entire. May not such a state be the A. ccespitosa of Cavanilles ? 



8. Azorella glebaria. 



Bolax glebaria, Commerson, in Juss. Gen. p. 266 ; Gaud, in Ann. Sci. Nat. 5, p. 



104, t. 3, f. 2, & Bot. Freyc. Voy. p. 136; DC. Prodr. 4, p. 78; Hook. Ic. PL 



t. 492 ; Hook. f. El. Antarc. p. 285. 

 B. (jummifera <Ss B. complicata, Spreng. Prodr. Umb. p. 9. 

 Hydrocotyle gummifera, Lam. Diet. 3, p. 156. 

 Azorella tricuspklata, Lam. 111. Gen. t. 189, f. 2. 

 A. c&spitosa, Vahl, Symb. 3, p. 48 ; Willd. Spec. PI. 1, p. 1365, ex parte, non Cav. 



Hab. Orange Harbour, Fuegia; common. (Both the entire and 

 the trifid-leaved forms.) 



176 



