556 VITACEAE 



Family 80. VITACEAE. Grape Family. 



Woody vines, climbing by means of tendrils. Flowers perfect, polj'ga- 

 mous, or dioecious, in axillary clusters. Sepals and petals 4 or 5, the latter 

 valvate. Stamens as many as the petals and opposite them. Gynoecium 

 of 2, or rarely 3-6, united carpels; styles united; stigmas capitate or peltate. 

 bmit a berry; seeds 1 or 2 in each cavity. 



^*T,?kL"°"^ ^^^^ present; leaves in our species simple, palmately veined and usually 

 ^iJTogjTious disk wanting ; leaves palmately 5-7-foliolate. 2. Paktiienocissus. 



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1. VITIS (Tourn.) L. Grape. 



Climbing or trailing vines, with shreddy bark and simple tendrils. Leaves 

 alternate, simple palmately lobed, petioled ; stipules small and caducous. Flow- 

 ers dioecious, polygamo-dioeceous, or rarely perfect. Disk hypogynous. Calvx 

 mmute Fetals caducous, coherent at the apex as a cap. Stamens exserted. 

 Uvary 2-celIed, rarely 5- or 4-celled. Berry pulpy. Seed^ few, pear-shaped. 



"^^ifndThlil^^al',^ somewhat puberident when yomig. glabrate in age, except the veins 

 and their axils beneath; vme high-climbmg. 1 V vulpina. 



iwigs ana leaves white-floccose when young; plant scarcely cUmbing. 2. V. arizonica. 



■tu' ^l '"jP^^ L- High climbing vine; leaf-blades thin, broadly cordate, 

 with a broad sinus, often somewhat 3-lobed, deeply and irregularly serrate, 

 O iZ cm. long 6-15 cm. wide; panicles 5-12 cm. long; berries 1 cm. or less in 

 diameter bluish or purplish black, with a bloom, very sour. Woods and river 

 banks: N.B._-W.Va.-Tex.-N.M.-Wyo. Plain-Mont. Ap-Je. 



Ki ?■ ^' ^^^onica Engehn. Weak, branched vine, scarcely chmbing; leaf- 

 blades cordate-ovate, with a broad sinus, usually indistinctly lobed, dentate, 

 with numerous small teeth, white-floccose when young, becoming more glabrate 

 m age; panicles o-8 cm. long; berries black, about 1 cm. m diameter, pleasant- 

 ta^ting. ij) V. boulderensis Daniels. River banks and canons: N.M.— Colo.— 

 Utah— s Cahf.; Mex. Son.—Submont. Ap-Je. 



2. PARTHENOCiSSUS Planch. Virginia Creeper, American Ivy, 



Woodbine. 



Climbing or traihng vines, with forking tendrils, their branches often with 

 adhesive disks. Leaves alternate, palmately 5-7-foliolate. Flowers perfect or 

 polygamo-dioecious, m compound cymes. Sepals and petals 5. Disk obsolete 

 or J^^ntmg. Stamens 5. Ovary 2-ceUed, sessile. Berries with scant pulp, 

 inedible. Seeds more or less 3-angled. [Psedera Neck.] 



Aerial rootlets present; tendiils with disks. IP auinauefolia. 



Aerial rootlets lacking; tendrils without disks. 2." p. Sea 



1. P. quinquefolia (L.) Planch. Tall vine, chmbing; branches warty; 

 leaves usually 5-foliolate; leaflets ovate or obovate to oblong-lanceolate, acute 

 or short-acuminate, serrate above the middle, teeth directed forward; cor^-mbs 

 »-l^ cm. broad ; berries subglobose, 8-9 mm. in diameter, blue, with a scant bloom. 

 Woods and banks: Que.^Fla.— Tex.— S.D.— Man. Plain— Suhmont. Je-Jl. 



^\?' V:^^^^^ (Knerr) Hitchcock. Stragghng vine, with long tendrils, and 

 smoother bark; leaflets 5-6, thin, 4-10 cm. long, lanceolate or oval, acuminate, 

 serrate, with large, often flaring, lanceolate teeth; corymb about 5 cm. broad; 

 berries 5-7 mm m diameter, bluish black. P. quinquefolia laciniaia Planch. 

 Woods and banks: Mich.— Ohio— N.IVI.— Ariz.— Wyo. PMn— Suhmont. Je- 



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Family 81. MALVACEAE. Mallow Family.. 



Herbs (all ours), or rarely shrubs or trees, with alternate, palmately ribbed 



with 



Flow- 



gular. Calyx of 5, more or less united valvate sepals. Petals 



