636 PATAGONIAN EXPEDITIONS I BOTANY. 



i. SANICULA GRAVEOLENS Poepp. (5. macrorhiza Colla.) 

 Leaves bipinnatipartite, very long petioles ; lower divisions petiolulate, 

 deeply 3-5-pinnatifid, incised-toothed, the teeth cuspidate. Floral 

 branches long, naked, simple or multifid to subumbellate. Umbellules 

 2-6, subsessile or long-stalked. Flowers 15-60, crowded, the outer 

 sterile, subsessile, later pediceled ; the central female, sessile. 

 (Chili); Chubut, in mountains near Carren-loefu. 



2. S. PATAGONICA Speg. 



Low, green-glaucescent. Stems erect, 10 cm. high, subfastigiate, obso- 

 letely subtrichotomous. Leaves 5-3-partite, segments petiolulate, obovate- 

 cunjeate, once or twice tripartite ; lobes narrow, entire, mucronulate. Pe- 

 duncle surpassing the petioles ; umbels 3~5-rayed ; the rays longer than 

 the peduncle, and 3-flowered ; flowers with long slender pedicels. Invol- 

 ticres and invohicels 3-o-leaved, the leaves linear. Achenes densely ver- 

 ruculose-muricate. 



N. Patagon., at confluence of Rivers Limay and Neuquen. 



7. ERYNGIUM Linn. 



Herbs, usually with spiny-toothed and lobed leaves, and densely bracted 

 heads or spikes of small flowers. Calyx-teeth sharp. Petals erect, emar- 

 ginate, without an inflected point. Fruit ovoid, scaly or tuberculate. 

 Carpels nearly terete. 



Species 150, widely distributed in tropical and temperate regions, 

 (Fig. in Eng. & Prantl, iii, 8, p. 136.) 



1. E. AGAVIFOLIUM Griseb. 



Tall, thickish plant. Leaves parallel-nerved, over i meter long, 15 

 cm. broad, oblong-linear, acuminate, dentate-pinnatifid, the cauline semi- 

 amplexicaul ; large and small teeth sometimes alternating. Heads ovoid- 

 oblong, more than twice as long as the involucre. Involucral leaves 20. 

 lanceolate-acuminate, entire, spreading or reflexed. Bractlets lanceolate- 

 acuminate, pungent, twice as long as the flower. 



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



2. E. CHUBUTENSE Neger. 



Stemless, root fibrillose, with long-petiolate (10 cm.), tufted, radical 

 leaves; their segments lobed-toothed ; the lobes coarse or narrow, mucro- 



