REFERENCE-Johnston, Marshall C. ous to United States and Mexico. lus. 1963. The species of Ziziphus indigen- NUMBER OF SPECIES: Native shrubs, 2 (also in Mexico); naturalized trees, 1; P.R. and V.I. native trees, 3, naturalized trees, 1; Mexico, additional trees, 4, shrubs, 1; total, mostly tropical 100-150. ZÍZIPHUS JUJUBA Mill. Rhamnus zizyphus L., Sp. Pl. 194. 1753. #Ziziphus jujuba Mill. Gard. Dict. ed. 8, Ziziphus No. 1. 1768. COMMON JUJUBE‡ DERIVATION-From jujube, the French common name, derived from the Arabic. OTHER COMMON NAMES-Chinese jujube, jujube. RANGE-Cultivated for its fruits and escaped and naturalized locally from Ala. to La. and Tex., according to Small (Man. Southeast. Fl. 831. 1933) and Correll and Johnston (Man. Vasc. Pl. Tex. 1013. 1970). Native of se. Europe and s. and e. Asia. Planted and naturalized in subtropical regions. Ziziphus obtusifòlia (Hook. ex Torr. & Gray) Gray (Gen. Fl. Am. Bor.-Or. Ill. 2: 170, pl. 163. 1849; Condalia obtusifolia (Hook.) Weberb., C. lycioides (Gray) Weberb., Condaliopsis lycioides (Gray) Suessenguth), lotebush (lotewood condalia‡, gumdrop-tree; clepe, Spanish), mentioned previously in a note, may rarely become a small tree in s. Ariz. A shrub or small tree 3-13 ft (1-4 m) tall, according to Johnston (1963). Two varieties have been distinguished. Range-Sw. Okla. and c. Tex., w. to s. N. Mex., nw. Ariz., s. Nev., and se. Calif. Also in n. Mex. (B. Cal., B. Cal. Sur. and Son., e. to Tamps., S.L.P., and Ver.). References-Johnston, Marshall C. Brittonia 14: 367. 1962. Johnston, Marshall C. Am. J. Bot. 50: 1025. 1963. Zygia, see Pithecellobium APPENDIX 1 CONDENSED CHECKLIST-ALPHABETICAL BY SCIENTIFIC NAMES This condensed Checklist contains only the accepted scientific names of species and varieties of United States trees and their approved common names. The arrangement is alphabetical by scientific names. As in the main Checklist, naturalized species are designated by capitals and small capitals. Also, the asterisk (*) indicates important forest tree species commercially useful for lumber or other wood products or noteworthy for special values. Appendix 2, Condensed ChecklistAlphabetical by Common Names is the same but has the common name first, as in the Index of Common Names. *Abies amabilis Dougl. ex Forbes, Pacific *Acer saccharinum L., silver maple Alnus maritima Muhl. ex Nutt., seaside alder Alnus oblongifolia Torr., Arizona alder *Alnus rhombifolia Nutt., white alder *Alnus rubra Bong., red alder Alnus rugosa (Du Roi) Spreng., speckled Alnus serrulata (Ait.) Willd., hazel alder Amelanchier alnifolia (Nutt.) Nutt., west- Amelanchier arborea (Michx. f.) Fern., mangrove Baccharis halimifolia L., eastern baccharis *Betula alleghaniensis Britton, yellow birch *Betula lenta L., sweet birch *Betula nigra L., river birch Betula occidentalis Hook., water birch *Betula papyrifera Marsh., paper birch var. papyrifera, paper birch (typical) var. commutata (Regel) Fem., western paper birch var. cordifolia (Regel) Fern., mountain paper birch var. kenaica (W.H. Evans) Henry, Kenai birch var. neolaskana (Sarg.) Raup, Alaska paper birch var. subcordata (Rydb.) Sarg., northwestern paper birch *Betula populifolia Marsh., gray birch Betula uber (Ashe) Fern., Virginia roundleaf birch Bourreria ovata Miers, Bahama strongback Bourreria radula (Poir.) G. Don, rough strongback BROUSSONETIA PAPYRIFERA (L.) Vent., PAPER-MULBERRY Bumelia celastrina H.B.K., saffron-plum Bumelia lanuginosa (Michx.) Pers., gum bumelia Bumelia lycioides (L.) Pers., buckthorn bumelia Bumelia tenax (L.) Willd., tough bumelia Bursera fagaroides (H.B.K.) Engler, fragrant bursera Bursera microphylla Gray, elephant-tree Bursera simaruba (L.) Sarg., gumbo-limbo Byrsonima lucida DC., key byrsonima CAESALPINIA GILLIESII (Hook.) Dietr., PARADISE CAESALPINIA Caesalpinia mexicana Gray, Mexican caesalpinia pecan *Carya laciniosa (Michx. f.) Loud., shellbark hickory *Carya myristiciformis (Michx. f.) Nutt., nutmeg hickory *Carya ovata (Mill.) K. Koch, shagbark hickory var. ovata, shagbark hickory (typical) var. australis (Ashe) Little, Carolina hickory *Carya pallida (Ashe) Engl. & Graebn., sand hickory *Carya texana Buckl., black hickory *Carya tomentosa (Poir.) Nutt., mockernut hickory Castanea alnifolia Nutt., Florida chinkapin *Castanea dentata (Marsh.) Borkh., American chestnut * Castanea ozarkensis Ashe, Ozark chinkapin Castanea pumila Mill., Allegheny chinkapin *Castanopsis chrysophylla (Dougl.) A. DC., giant chinkapin CASUARINA EQUISETIFOLIA J. R. & G. Forst., dier fiddlewood Citharexylum fiddlewood fruticosum L., Florida Crataegus crus-galli L., cockspur hawthorn Crataegus dilatata Sarg., broadleaf hawthorn CITRUS AURANTIFOLIA (Christmann in L.) Crataegus douglasii Lindl., black hawthorn Swingle, LIME CITRUS AURANTIUM L., SOUR ORANGE Cladrastis kentukea (Dum.-Cours.) Rudd, yellowwood Clethra acuminata clethra Michx., cinnamon Crataegus erythropoda Ashe, Cerro haw thorn Crataegus flabellata (Bosc) K. Koch, fanleaf hawthorn Crataegus flava Ait., yellow hawthorn Crataegus greggiana Eggl., Gregg hawthorn Harbison Crataegus harbisonii Beadle, Crataegus opaca Hook & Arn., riverflat hawthorn Crataegus phaenopyrum (L. f.) Medic., Crataegus pruinosa (H. L. Wendl.) K. Crataegus punctata Jacq., dotted hawthorn swamp-privet Forestiera angustifolia Torr., Texas forestiera Forestiera phillyreoides (Benth.) Torr., desert-olive forestiera Forestiera segregata (Jacq.) Krug & Urban, Florida-privet Franklinia alatamaha Bartr. ex Marsh., franklinia *Fraxinus americana L., white ash Fraxinus anomala Torr. ex Wats, singleleaf ash var. anomala, single leaf ash (typical) var. lowellii (Sarg.) Little, Lowell ash Fraxinus berlandierana A. DC., Berlandier ash Fraxinus caroliniana Mill., Carolina ash Fraxinus cuspidata Torr., fragrant ash Fraxinus dipetala Hook. & Arn., two-petal ash Fraxinus gooddingii Little, Goodding ash Fraxinus greggii Gray, Gregg ash Fraxinus latifolia Benth., Oregon ash *Fraxinus nigra Marsh., black ash Fraxinus papillosa Lingelsh., Chihuahua ash *Fraxinus pennsylvanica Marsh., green ash *Fraxinus profunda (Bush) Bush, pumpkin ash *Fraxinus quadrangulata Michx., blue ash Fraxinus texensis (Gray) Sarg., Texas ash Fraxinus velutina Torr., velvet ash Fremontodendron californicum (Torr.) Cov., California fremontia Fremontodendron mexicanum Davidson, Mexican fremontia Garrya elliptica Dougl. ex Lindl., wavyleaf silktassel Genipa clusiifolia (Jacq.) Griseb., sevenyear-apple Gleditsia aquatica Marsh., waterlocust Esenbeckia berlandieri Baill., Berlandier *Gleditsia triacanthos L., honeylocust esenbeckia Gordonia lasianthus (L.) Ellis, loblolly-bay EUCALYPTUS GLOBULUS Labill., BLUEGUM Guaiacum angustifolium Engelm., Texas |