450 FLORA OF TEXAS. 



leaves varying from oval or obovate to lanceolate, acute, 

 obtuse, or emarginate, undulate, short-petioled ; umhels 

 lateral and terminal, nearly sessile, densely many-flowered; 

 jimuers small, greenish; leaves of the crown oblong, erect, 

 as long as the sessile gynostegium. Dry sterile soil. June 

 and July. Stem l°-li° high; leaves li'-2J' long. Red 

 River. — Torrey. 



A. coNJsriVEJS'S, Decaisne. Stem stout, simple, pubescent 

 above ; leaves nearly sessile, erect, mucronate, the lower 

 ones approximate, oblong or oblong-obovate, the upper 

 more distant, smaller and lanceolate ; umhels 3-6, 6-9-flow- 

 ered, the stout peduncle and pedicels nearly equal, pubes- 

 cent ; flowers large, greenish ; leaves of the crown oblong, 

 incurved, twice as long as the gynostegium, with their 

 rounded summits connivent over it. June and July. 

 Stem l°-2° high ; leaves l'-2' long, somewhat fleshy ; corolla 

 8"-10" wide. 



** Leaves alternate. 



A, PANICULATA, Decaisne. Closely pubescent; stern an- 

 gular, often branching; leaves oblong or lance-oblong, 

 acute or obtuse at each end, short-petioled ; umhels corym- 

 bose, often compound ; corolla large, greenish, spreading or 

 nearly erect ; leaves of the crown oblong, obtuse, ascend- 

 ing, shorter than the nearly sessile gynostegium. (Podo- 

 stigma viridis. Ell.) Dry pine-barrens. July. Stem 

 l°-l|-° high, leafy to the summit ; leaves 3-4' long ; co- 

 rolla 1' wide. 



A. DECUMBENS. Found in Northern Texas by Marcy's 

 Expedition. 



97. OLIVE FAMILY. Order, Oleace^. 



Trees or sliruls, with opposite entire or pinnate exstipu- 

 late leaves, and perfect polygamous or dioecious flowers ; 

 calyx 4-toothed ; corolla 4-lobed or 4-petalous, valvate in 



