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- ‘PRAXINUS APOCYNACE 2 439 
bumen, or exalbumenous. Cotyledons flat, or plano-convex. 
1 FRAXINUS Tourn, L. Gen. n, 1160. 
Trees with rather light tough wood, chiefly opposite and odd- 
pinnate leaves, and small flowers in panicles, appearing with or. 
before the leaves from separate buds. Flowers diccious or poly- 
gamous, sometimes perfect. Calyx very small, 4-cleft or irregu- 
lariy toothed or entire or wanting. Petais, when present, 4, 
induplicate-valvate in the bud, either separate or united in pairs 
‘at the very base, often wanting. Stamens 2, sometimes 3 or 4. 
Ovary 2-celled, with a pair of ovules at the summit of each cell. 
Stigma 2-lobed. Fruit an entire dry indehiscent samara, with 
the wing mainly terminal, and suspended seeds. | : 
F. Oregana Nutt. Sylv. iii, 59, t. 99. (Orraon Asn.) A tree 20-100. 
feet high and 1-4 feet in diameter: leaves and young branchlets villous-_ 
pubescent; leaflets 5-7, lanceolate-oblong to oval, usually acuminate, entire 
or nearly so, 2-4 inches long, veiny, the upper surface soon glabrous: 
flowers dicecious ; all with a minute calyx and no petals; staminate panicles 
dense, with oblong anthers; pistillate in ample, at length rather loose 
panicles: fruit with nearly clavate and slightly compressed body, the mar-» 
gined edges gradually widened upward into the oblanceolate, wing, an. 
inch or more long. By streams and swales, California to Brit. Columbia. 
Orper LX APOCYNACE: Lindl. Nat. Syst. ed. 2, 299. 
Perennial herbs, shrubs or trees with mostly acrid milky 
juice, opposité, verticillate, or alternate entire leaves without. 
stipules, and perfect regular 5-merous flowers. Calyx free, or 
in ours adherent to the very base of the ovaries. Corolla 
convolute and often twisted in the bud. Stamens 5, borne on - 
the corolla and alternate with its lobes: anthers 2-celled, dis- 
posed to cohere with the stigma: pollen-grains simple, often 
glutinous. Ovary of 2 distinct carpels with the styles or stig 
mas united, or 1l-celled with 2 parietal placentz, or 2-celled. 
Ovules few to numerous. anatropous or amphitropous.. Seeds 
often bearing acoma. Embryo large, in sparing albumen. 
1 APOCYNUM Tourn. L. Gen. n. 305 
Perennial herbs with branching stems, opposite. mucronate 
tipped leaves and small white or rose-colored flowers in terminal 
and axillary small cymes. Calyx 5-parted, its short tube co- 
herent by the disk with the base of the ovaries. Corolla cam- 
panulate, 5-cleft, toward the base bearing a triangular scale-like 
appendage opposite each lobe, Stamens borne on the base of 
the corolla: filaments very ahort: anthers of firm texture, sagit- 
tate, conniving around the solid stigma, to a ring of which the 
broad summit of the connective adheres.’ Proper style none. 
Ovaries two, ovoid, in fruit becoming a pair of long slender folli- 
cles. Glands 5, around the base of the ovaries. 
A. androsemifolium L. Sp. 213, Stem erect with divergent branch- 
