246 PROCEEDINGS OP THE AMERICAN ACADEMY 



oblong, small, with few divaricate branches : flowers small (2 lines 

 broad), on very short pedicels: style very short. — Jalapa. 



9. S. laxiflora (Tovaria, Baker). Leaves 6 to 9 : panicle del- 

 toid, with ascending branches : flowers twice larger, on pedicels 3 to 

 6 lines long : style as long as the ovary. — Guatemala. 



* * Flowers mostly fascicled in a simple raceme. 



10. S. scilloides, Mart. & Gal. Leaves 6 or 8, narrowly oblong : 

 raceme straight : flowers small : style as long as the ovary. — Central 

 Mexico. 



11. S. flexuosa, Bertol. Leaves 10 or 12, oblong to ovate: 

 raceme very flexuous : flowers large : style twice longer than the 

 ovary. — Guatemala. 



20. MAIANTHEMUM, Weber. 



1. M. Canadense, Desf. Pubescent or glabrous, 3 to 5 inches 

 high : leaves lanceolate to ovate, cordate at base with a narrow sinus, 

 sessile or very shortly petioled : perianth-segments a line long : style 

 slender, as long as the ovary: berry 1£ to 2 lines in diameter : seeds 

 light-colored, scarcely over a line thick. — Ann. Mus. Par. 9. 52; 

 DC. in Red. Lil. t. 216, f. 1. Smilacina Canadensis, Pursh ; Bart. 

 Fl. N. Am. t. 70. Convallaria Canadensis, Poir. Smilacina bifolia, 

 var. Canadensis, Gray. Labrador to the Saskatchewan, south to 

 Iowa, Illinois and N. Carolina. 



2. M. bifolium, DC. Low and slender, somewhat pubescent : 

 leaves ovate-cordate with a broad sinus, the lower rather abruptly 

 acute and with a petiole |- to an inch long, the upper more attenuate 

 and petiole shorter : style long and slender : berry 2 lines in diameter, 

 1-2-seeded: seed brown, a line thick. — Var. (?) dilatatum, Wood. 

 Stouter (6 to 12 inches high), glabrous: leaves broader, the lower 

 subreniform-cordate with j:>etioles often 2 inches long or more : flowers 

 rather larger : style shorter, stout : berry larger, 2-4-seeded : -seed 

 brownish, lh lines thick. — Proc. Philad. Acad. 1868, 174. Smilacina 

 dilatatum, Nutt. in herb. California (Marin County) to Alaska. 

 Apparently connected with the typical form by var. Kamschaticum 

 of Eastern Siberia, with slender style. The present form seems to 

 recur also in Japan. 



21. NOLINA, Michx. 

 * Fruit somewhat inflated, the cells not burst by the ripening seed. 

 1. N. Georgiana, Michx. Stem slender from a thick rhizome, 

 1 to 3 feet high, including the simple sparingly branched panicle : 



