92 



KEY TO THE FAMILIES AND GENERA 



57. CELASTRACE^. 



A. Fr. indehisccnt 1. ELroden- 



AA. Fr. a dehiswnt caps. - [dron. 



B. Lvs. opp«x<ite. 



c. Ovules 1-2. in the axis of the locule 2. Eronymus. 



cc. 0\-uies 2. in the locules, erect 3. Pachystima. 



BB. L\-!i. alternute. 



c. <.>vary confluent with the disk. 



o. Locules generally i-ovuled: plants un- 

 armed: fls. solitary, clustered or 



cynia*e ■*■ Maytenus, 



DD. Locules 2-o\'uled: plants often armed: 



fls. cyinose 5. Gymnoa- 



[poria. 



cc. Ovary free 6. Cclastrus. 



Other genera treated are Cassine, Catha, and Tri pterygium. 



58. STACKHOUSIACE^. 



Id cultivation Stackhousia. 



59. RHAMNACEJE. 



A. Calyx-lobes persistent, the often star-.shaped 

 disk joining its tube to the entire surface of 



the ovary: fr. dry. 3-winged 1. Gouania. 



AA. Calyx- lobe .'* deciduou.s. 



B. Disk lining the shallow calyx-tube nearly or 

 quite free from the ovary: fr. drupaceous, 

 mostly fleshy and often edible, witli a 

 single 1— 1-celled stone inclosing as many 

 seeds, or 1-seeded by abortion; seed-coats 

 membranous, 

 c. Petals 0: endosperm copious, ruminate . . 2. Reynosia. 

 cc. Petals 5. 



D. Fr. winged, dry, leathery: plants 



prickly; Ivs. S-nerved 3. Paliurus. 



DD. Fr. a fleshy drupe: plants prickly: Ivs. 



3-nerved 4. ZUyphus. 



DDD. Fr. a drupe with leathery sarcocarp: 



plants unarmed: Ivs. penninerved, ... 5. Berchemia. 

 BB. Disk lining the calyx-tube, or both adherent 

 to ovary: fr. drupaceous or becoming dry, 

 c. Lvs. very small or wanting, the spines If.- 



likc G. Collefia. 



cc. Lvs. ordinary. 



D. Fr. a fleshy drupe free from calyx, con- 

 taining 2—4 separate nut-like stones 7. Rhamrius. 

 DD. Fr. becoming nearly or quite dry, 

 partly inferior, separating into 3 

 nutlets: ovary adnate to disk at its 



base 8. Ceauofhus. 



DDD. Fr. a caps, with membranous covering, 

 inferior, separating into 3 cocci, 



which are dehiscent inside 9. Pomadcrris. 



DDDD. Fr. indehiscent, pea-shaped, 3-celled, 



3-8eeded; ovary free 10. Hoxenia. 



The genus Rhamnella is sometimes cultivated. 



60. VITACEiE. 



A. Stamens free: climbing shrubs or herbs. 

 B. Petals expanding; fls. in cymes: bark close; 

 pith white, 

 c. Plants climbing, mostly by adhesion of 

 dilated and disk-shaped lips of the 

 tendril-branches: no distinct disk or 

 free nectariferous glands, but a nec- 

 tariferous and wholly confluent thick- 

 ening of the ba.se of the ovary, or even 



this obsolete: lvs. never pinnate \. Partheno- 



cc. Plants climbing by the prehension and [cissus. 



coiling of naked-tippeu tendrils: nec- 

 tariferous disk or glands surrounding 

 the ovary or its base, and at lea.st partly 

 free from it. 

 D. Fls. S-meroua: woody plants, mostly 



hardy 2. Ampelopaia. 



DD. FLs. 4-mcrou8: more or les-s fleshy, 

 woo*Jy or herbaceous; mostly tropi- 

 cal or subtropical 3. Ciaaua. 



SB. Petals cjwt off from the base while cohering 

 by their tips; hypogynoua disk or 5 

 nectariferous glands alternate with the 

 Btarnens; fls. in panicles: berries usually 

 edible: lvs. rarely comixjund, never pin- 

 nate 4, Vitia. 



VA. Stamens with connate filaments: lvs. 1-3-pin- 



nate: upright trees or shrubs •*>. Leea. 



Tetrastigma is also briefly treated. 



61. SABIACE^. 



In cultivation 



Mcliosma. 



62. ACERACE^. 



A. Nutlets winged all around: Iva. pinnate, with 



9-15 Ifta _. . . 1. Dipieronia. 



AA. Nutlets with an elongated wing on one side: 



lvs. simple or coniptiund 2. Acer. 



63. STAPHYLEACE^. 



A. TjVs. opposite: several seeds in each cell. 

 B. Ovary 2-3-parted at base. 



c. Caps, vesiculose 1. Staphylea, 



cc. Follicles coriaceous 2. Euscaphis, 



BB. Ovary 3-Iobed: fr. fleshy or leathery 3. Turpinia. 



AA. Lvs. alternate: 1 seed in each cell: fr. berry- 



hke 4. Tapiscia. 



64. MELIANTHACEiE. 



A. Calyx aubsaccate. tlie segms. narrow, very 



unequal at base: ovules in the locules 2-4.. . . 1. Melianthus, 

 AA. Calyx of 5 free, roundish sepals: ovules 



numerous in 2 aeries on the placentffi 2. Greyia. 



65. HIPPOCASTANACEiE. 



In cultivation ^sculus. 



66. SAPINDACE.^. 



A. Fls. irregular. 



B. Ovules solitary in the locules (rarely 2 in 

 Paullinia): plant climbing. 



c. Fr. a winged samara 1. Serjania. 



cc. Fr. bladdery, membranous, loculicidal. . . . 2. Cardiosper- 



[mum. 



ccc. Fr. a pear-shaped, septicidal caps 3. Paullinia. 



BB. Ovules 2 or more in the locules: plant erect. 



c. Sepals valvate; petals 3^ 4. Kcelreuferia. 



cc. Sepals imbricate; petals 4-5 5. Ungnadia. 



AA. Fls. regular, or nearly so. 



B. Stamens inserted at the base of the ovary 

 inside the disk, often unilateral. 

 C. Fr. dehiscent; ovules 2 or more in cells. 

 D. Disk produced into 5 horns; fls. in 



racemes before the lvs., showy 6. Xantkoceras. 



DD. Disk annular or cup-shaped; fls. 

 usually in panicles. 

 E. Lvs. ternate: sepals glabrous; disk 



cupular 7. Delavaya. 



EE. Lvs. pinnate. 



F. Petals 5; sepals imbricate, pubes- 

 cent 8. Blighia. 



FF. Petals 0; sepals valvate 9. Stadmannia, 



cc. Fr. indehiscent. 



D. Aril present; fr. edible. 



E. Calyx deeply 5-parted, imbricate; 



petals present 10. Euphoria. 



EE. Calyx with small valvate lobes or 



obaoletely toothed; petals U. Litchi. 



DD. Aril wanting. 



E. Fr. deeply lobed or divided into 3 

 (-1) cocci: sepals 5: Ifts. usually 



many 12. Sapindus. 



EE. Fr. not deeply lobed: sepals 4: Ifts. 



2-4 13. Melicocca. 



BB. Stamens inserted outside the disk or disk 

 wanting; petals 0: caps, winged, papery 

 or leathery: lvs. simple or pinnate 14. Dodonxa. 



Additional genera are somewhat cultivated, as Alectryon. Ber- 

 Bamo, and Diploglottis. 



67. ANACARDIACE.^. 



A. Lvs. simple 



B. Stamens 5; Styles 3 1- Semecarpum. 



BB. Stamens 8-10 (all or some fertile); style 



eccentric; stigma a mere dot 2. Aruicardium 



BBB. Stamens 1-5; style lateral; stigma simple. 3. Mangi/era. 

 AA. Lvs. pinnate or composed of 3 Ifts. 

 B. Ovary 1-celled. 



c. Ovules suspended at or near the apex. 

 D. Styles in the pistillate fls. short, in 



the staminate fls. 4-5 4. Tapiria. 



5. Cyrtocarpa. 



DD. Styles 3 6. Schinus. 



cc. Ovule.s suspended by a basilar funiculus. 



D. Styles 3 7. PisUida. 



