118 ANAOAEDIACEyli:. khus. 



cell, ascending, anatropous. Fruit a firm-coriiiceous follicle 

 opening down the ventral suture, l-'i-se'ided. 



F. spinescens Greene 1. c. fliossopetalon spinescens Gray I. c. A 

 smooth rigidly branched shrub 2—3 Met high: leaves oblong to sp.atu- 

 late, narrowed below on slender pedicels 2 — 4 lines long, acute or ob- 

 tuse: flowers on slender pedicels 2 — i lines long: lobes of the calyx 

 oblong, a line or more long: petals white, 4—5 lines long, spatulate, 

 attenuate below to a short slender claw: stigma nearly sessile, 2- 

 lobed; ovary acute; fruit riot seen. Bluffs of Snake river (Cusick). 



Order XXV. ANACARDIACE^. Lindl. Nat. Syst. ed. 1. 

 Shrubs or trees with resinous or milky juice, simple or com- 

 pound leaves without stipules, and small flowers in axillary or 

 terminal panicles. . Flowers usually regular, perfect, dioecious 

 or polygamous. Sepals usually 5, distinct or more' or less uni- 

 ■ ted, mostly persistent. Petals of the samS number as the sep- 

 als, or wanting, inserted into the disk which lines the bottom 

 of the calyx. Stamens as many as sepals, or twice as many, or 

 more, sometimes part of them sterile; filaments distinct, some- 

 times alternately shorter, inserted with the petals. Ovary sol- 

 itary, free, or rarely adhering to the calyx, 1-celled, or with 1 

 or 2 abortive cells ;ovule solitary, on a funiculus which rises 

 from the base of the cell. Styles 3, rarely 4, distinct or com- 

 bined. Fruit a 1-seeded indehiscent drupelet. Seed erect or 

 suspended, anatropous, without albumen. A large order, 

 represented here only by the genus 



RHUS L. Gen. n. 361. 



Shrubs or small trees with alternate leaves and small poly- 

 gamous or polygamo-dkfcious flowers in axillary and terminal 

 bracteate racetnes or panicles. Calyx small, 4-6-parted, persi.-t- 

 ent, imbricated in. the bud. Petals 4-6, imbricated in the bud. 

 Stamens as many or twice as many as petals, with subulate fila- 

 ments, inserted under the edge of the disk. Friiit a dry drupe- 

 let. Seed pendulous upon a slender seed-stalk arising from the 

 base of the cell. 



* Flowers polygamous or dioecious; panicled, developed with or 

 after the leaves. 



K. glabra L. Sp. i, 265. (Sumach). An erect shrub 4—12 feet high, 

 smooth and glaucous when young: leaves oddpinnate; leaflets 13—31 

 petiolulate, oblong to lanceolate, acuminate, acutelv serrate 1-3 inches 

 ong: inflorescence terminal, thyrsoid, hirsute: sepals broadly subu- 

 late, about a hue long: petals oblong, a little longer than the sepals' 

 drupelets clothed with crimson acid hairs: seeds s^mooth about a line 



Sthe^oXTtirtifstSef """'' ""'"" ^'"^""^ *° ^^"- C^l"-"- 



* S-,.*?*!""**"*'"" ^'- Sp- 266. Stems erect, 1-3 feet high- leaves 

 tnfoholate, pubescent; leaflets rhomboid, acuminate, entire Ir'toothid 



^oL'fo"'''i """^ '^°'■^?'■ 'f ^ °'^"1"«- Pan'^^les axillarv; racemes sub- 

 sess le; flowers mostly dioecious: fruit white, subgobose smooth 

 persistent. Along small streams, eastern Oregon fo the ' IZntfc 



