632 PATAGONIAN EXPEDITIONS : BOTANY. 



"Rather scarce" (J. D. Hooker); "common over the dry places of the 

 steppes" (Dus6n). Magellan; Fuegia, at Lapataia and Ushuaia; S. Pat- 

 agon., "In tufts on ground near Coy R., and in dense clumps on the 

 plain. Forms good fuel." O. A. Peterson, Dec., 1896; W. Patagon. 



1 8. AZORELLA UTRICULATA Griseb. 



Suffruticose, cespitose. Leaves imbricate, recurvedj their lamina shin- 

 ing, trifid midway; the lobes linear, acute, mucronate, spreading, the 

 margins recurved, canaliculate below. The sheaths dilated, ciliate. 

 Umbel pedunculate. Involucral leaves 5-6, shortly lanceolate, obtuse, 

 basi-connate. Pedicels as long as the peduncle, in fruit much exserted. 

 Fruit smooth, shining, utricular, ovoid, obscurely tetragonal. Calyx-teeth 

 short, at length separating from the mericarps; which are dorsally flat- 

 tened, with 5 vittce on the filiform axis. 



Magellan. 



4. ASTERISCIUM Cham. & Schl. 



Glabrous herbs, with erect, branching, few-leaved stems ; also petioled, 

 palmately cut basal leaves. Umbels simple, the outer flowers male, the 

 inner fertile and short-pediceled. Calyx-teeth prominent ; petals inflexed 

 at apex. Style-base small. Fruit dorsally compressed, constricted at the 

 narrow commissure. 



Species 8, Chili and Argentina. (Fig. in Eng. & Prantl, iii, 8, p. 134.) 



i. A. CHILENSE Cham. & Schl. 



Glabrous from a woody root, with several terete stems, sulcate-striate, 

 30 cm. high or more, naked above. Leaves petioled, cuneate, rounded, 

 mucronate-dentate, 3-lobed. Peduncle canaliculate above, amplexicaul. 

 Umbels simple, terminal, many-flowered, the involucral bracts about 10, 

 as long as the pedicels of the central (fertile) flowers ; the marginal (ster- 

 ile) flowers with long pedicels. Calyx-lobes round-ovate, acuminate, 

 Petals twice as long, elliptical, emarginate. Fruit 4 mm., tetragonous- 

 prismatic, 4-winged, crowned by the calyx-teeth. 



(Chili); N. Patagon., near Rio Negro. 



2. A. FIMBRIATUM Speg. 



Glabrous. Root long, simple. Stem few-leaved ; leaves alternate, 

 petiolate, suborbicular, denticulate-fimbriate, obscurely 5~7-nerved. In- 

 volucral bracts 5, lanceolate, entire. Umbel simple or compound. 



