122 PULSE FAMILY. 



a little pulp or sweetish matter Inside, containing few or several large and thick hard 

 seeds (over \' in diameter) ; the fleshy cotyledons remaining underground in germi- 

 nation. 



56. GLEDITSCHIA. Thorny trees, witfc abruptly twice-pinnate or some of them once 



pinnate leaves, the leaflets often crenate-toothed, inconspicuous stipules, and small, 

 greenish, polygamous flowers in narrow racemes. Calyx 8-5-cleft, the lobes and the 

 8-5 nearly similar petals narrow and spreading. Stamens 3-10. Pod flat, very tar- 

 dily opening, often with some sweetish matter around the 1-several flat seeds. 

 Cotyledons thin. 



III. MIMOSA SUBFAMILY. Flowers perfectly regu- 

 lar, small, crowded in heads or spikes ; both calyx and corolla 

 valvate in the bud ; and the 4 or 5 sepals usually, and petals fre- 

 quently, united more or less below into a tube or cup. Stamens 

 4, 5, or more, often very many, usually more conspicuous than 

 the corolla and brightly colored, the long capillary filaments 

 inserted on the receptacle or base of the corolla. Embryo of 

 the seed straight. Leaves almost always twice-pinnate and with 

 small leaflets, or apparently simple and parallel-veined when 

 they have phyllodia (Lessons, p. 61) in place of true leaves. 

 The foliage and the pods only show the leguminous character. 



* Stamens once or twice as many as the petals, 4-10. Ours herbs or nearly so, with 

 rose-colored or whitish flowers, and leaves of many small leaflets. 



57. MIMOSA. Calyx commonly minute or inconspicuous. Corolla of 4 or 5 more or less 



united petals. Pod flat, oblong, or linear ; when ripe the valves fall out of a per- 

 sistent, slender margin or frame, and also usually break up into one-seeded joints. 



58. 8CHRANKIA. Calyx minute. Corolla funnel-form, the 5 petals being united up to 



the middle. Stamens 10. Pod rough-prickly all over, long and narrow, splitting 

 lengthwise when ripe into 4 parts. 



59. DESMANTHUS. Calyx 5-toothed. Corolla of 5 separate petals. Stamens 5 or 10. 



Pod flat, smooth, linear or oblong, 2-valved, no persistent margin. 



* * Stamens numerous, or more than 10. Ours all shrubs or trees. 



60. ALBIZZIA. Flowers yellow or rose-color to nearly white ; the long stamens mona- 



delphous at the base. Corolla funnel-form, the 5 petals united beyond the middle. 

 Pod flat and thin, broadly linear, not opening elastically. Leaves twice pinnate. 



61. ACACIA. Flowers yellow or straw-color ; the stamens separate and very numerous. 



Corolla of 4 or 5 separate or partly united small petals. Pod various. 



1. CHORIZEMA. (Greek, of no application.) ~U Greenhouse plants 

 from Australia. 



C. ilicifblium, Labill. HOLLY-LEAVED C. Bushy, with lance-oblong 

 leaves cut into strong spiny teeth or lobes, and racemes of small copper- 

 colored flowers, the wings redder. 



C. varium, Benth. Leaves round-cordate, nearly sessile, spiny-toothed 

 or entire ; flowers yellow and red. 



2. BAPTISIA, FALSE INDIGO. (Greek: dye, some species yielding 

 a poor sort of indigo.) Foliage of most species turning blackish in 

 drying ; nearly all grow in sandy or gravelly dry soil ; flowers spring 

 and early summer. 2Z 



