EXOGENS. 125 



Original of Isabella, Catawba, Concord. Common throughout U. S. 

 V. cestivdlis, Summbe-Gt. Kacenie long, slender; grapes small, 

 hlack, pleasant ; Ivs. i'-T wide. High-climber. Common, U. S. 

 Original of Clinton and var. V. cordifbha (ripdria, odoratissima), 

 Prost-G. Fls. very fragrant ; thyrsus large, loose ; grapes small, 

 black, acid, sweetened by frost. Common, U. S. V .miXjnna [roiundi- 

 folia), MuscADiNE-G. Panicle small; berries large, |' in diam., 

 brownish-purple, pleasant ; skin thick, tough. Lvs. small, round. 

 High-climber, bark smooth. Maryland, W. to Ark., S. to Gulf 

 States. Original of Scuppernong. 



Ord. 106. Rhamnaceae.— Fls. 4-5-merous, § , J* ? . C? § 9 1 "du- 

 ally small, green, white, sometimes red, yellow, blue; sol. or fascicled. 

 Disk fleshy, lining calyx-tube. Ova. free or adh. Fr. a drupe, boll, 

 3-4-angIed, or of 2-3 cocci. Lvs. simple, usually alt. ; sometimes 0. 

 Trees, Shriibs ; branches often spiny; sometimes climbing. 40 gen., 

 both worlds. 5 Tribes : 



Tribe 1. Fr. 3-angled or 3-winged. 1. Gouania, climbing. 30 

 spec, trop. Am., Asia. G. domingensis, Chawstick. S. Kla., W. 

 Ind. Tribe 3. Fr. 2-3 cocci, or a drupe. Trees or shrubs, often 

 spiny; lvs. opp., small or 0. 1. Colletia. Shrubs, very spiny. Mex., 

 Peru, Chili. Tribe 3. Fr. 3-4-coccous, dry, or drupe with 3-4 py- 

 renes. 1. Colubr'ma, Snake-wood. Small evergreen trees or shrubs, 

 often climbing. S. Am., Asia, Af. C. ameriedna, shrub, erect, S. 

 Fla. 2, Ceanothus. Shrubs or small trees, usually evergreen"; rts. 

 red. Both worlds. C. cceruleus, evergreen tree, fls. brilliant blue, in 

 large panicles. Mex. C. ameriedna. New Jersey Tea, decid. shrub. 

 N. J. to Fla. 3. Rh^mnus, Buckthorn. Shrubs or small trees, 

 often evergreen, often spiny. Many spec. ; N. hemisphere, chiefly in 

 Eur,, N. Asia; few in mts. of Ind. and Abyssinia. R. carolinidnus 

 (Frangula carolinidna), R. lanceoldta, both spineless, decid. N. J. to 

 ill., S. to Gulf Tribe 4. Drupe dry or fleshy, girt by calyx-tube. 

 1. Zizyphus, Jujube. Shrubs or small trees, often spiny ; widely 

 spread, tropics, chiefly in Old World. Drupe (jujube) edible. Z. 

 JujUha, Indian J. Evergreen, 12° high. E. Ind. Z. Lotus, Lotus 

 J. Evergreen, 6° high; believed to be the Lotus of the Lotophagi 

 (Odyssey, Book IX.). Mediterranean States of Af, especially Tripoli. 

 Z. mdgd}-is, CoMMOK .1. Decid., 6° high. S. Bur. Z. spina Christi, 

 Christ's Thoen. Evergreen, 6° high ; branches used for Our 

 Saviour's crown of thorns. Syria, N. Af 2. Palivirus. Decid. 

 Habit of last, but fr. dry, with broad-brimmed disk. 2 spec, Eur., 

 Asia. P. aculeatus, Poete-Chapeau ; also (and perhaps with better 

 right) called Christ's Thoen. Spiny shrub or tree, 10°-35° high. 

 S. Eur., W. Asia. Fig. 77. 3. Berchemia.. Drupe fleshy. Slender, 

 tough, high-climbing. 10 spec Both worlds. B. volubilis. Supple 

 Jack. Va. i« Ky., S. to Gulf Tribe 5. Samara. Unarmed climb- 

 ers. 1. Ventilago, evergreen. 10 spec. E. Ind. 



Ord. 107. Stackhousiaceae. — Fls. fj , reg. Pet. 5, white or yellow ; 

 infl. various. Disk thin, lining base of calyx-tube. Fr. 2-5 indehisc 

 cocci, winged, angled, or smooth, separating from a central persistent 

 column. Small Herbs, rhizome giving off slender branches ; lvs. en- 

 tire. Only gen. Stackhotisia. 20 spec. ; Australia; one in New Z., 

 one in Philippine Islands. 



Ord. 108. Celastraceae.-^Fls. ^ or ^ g 9 1 small, cymose. Pet. 



