«X) 



KEY TO THE FAMILIES AND CENERA 



jj. Carpels not appeiulHKtMl . . IS. Malvn. 

 rr. Slyle-branchos tippwi with siimll 



capitate or eliib-shaped stigmas. . H). Malma(nim. 

 EB. The ovules peniiukms. 



F. Styk-brai^hes longitudinally stig- 



matose inside 20. Plaguxnthus. 



FT. Style-branches truncate at apex or 



with small capitate stigma-s 21. SUa. 



Other genera described are Hoheria, Injienhousia, Kitaibelia, 

 and Kosteletckyu. 



42. MALPIGHIACE.E. 



A. Fr. a fleshy 3-stoned ilrupe ■ ■ . 1- Malpighia. 



AX. Fr. a caps, composed of 3 dehiscent berries: _ _ 



Hs. in terminal racemes . 2. Galphimia. 



A *A. Fr. consists of 1-3 sanmraa: fls. in umbel-like 



corymbs 3. Ummaphyl- 



Other genera described are Byrsoniina, Janusia. Sphedamno- 

 carpus and TristcUatcia. 



36. BOMBACACE^. 



A. L\-s- digitate: cotyledons conduplicate or 

 convolute. 

 B. Staminal column separated above mto 



numerous filaments. , r> i 



c. Caps, .i-valvwl. densely woolly withm ... 1. ISomlmi. 

 cc. Caps, wootiy. not woolly within. 



D. Calyi .Vcut 2. Adansoma. 



DD. Calyx truncate •.•,•■ Paclnra. 



BB. Staminal column .S-eut or 5-toothed, the 

 branches bearing 2-3 anthers, 

 c. Colunm outside below the middle aimu- 



lately .^>-10-lobed •*. Chorisia. 



cc. Column not annulate ,' j* • ' ^' ^^^"^' 



AA. Lvs. simple, feather-vpined, entire: cotyledons 



plane, leafy or fleshy 6. Dv.no. 



37. STERCDLIACE^. 



A. Petals concave or hooded at the base. , „ ,■ • 



B. Anthers .solitary between the stanunodes 1. Hutmi/ia. 



BB. .\nthers 2 or more between the staminodes. 



c. Fr. a membranous caps 2. Ahroma. 



cc. Fr. a woody caps 3. Oua^nma. 



ccc. Fr. drupaceous 4. Theohroma. 



*A. Petals flat. 



B. The petals deciduous. 



c. .\nthers sessile; calyx club-shaped or bell- 

 shaped 5. Reevesm. 



cc. .\nthers stipitate; sepals at length free., fa. Pterosper- 

 BB. The petals persistent or innrcescent. \mum. 



c. Anthers 10 or 15, rarely 20. „ „ , 



D. Ovules 2 in each locule i ■ Dombeiia- 



DD. Ovule-s a> >*■ Pfolnptleis. 



cc. .\nthers 5 «• Maherina. 



AAA. Petals 0. inc., 



B. Fls. bisexual 10- Frenwntia. 



BB. Fls. uni.icxual or polygamous. 



c. Anthers crowded without order: seeds 



without endosperm 11. StercuUa. 



cc. Anthers in a single ring: seeds with en- 



dosperm 12. Cola. 



Brachychiton, Chiranthodendron, and Heritiera are also treated 



43. ZYGOPHYLLACE.E. 



A. Ovary sessile: lvs. with 2 Ifts., rarely 1 1ft. . . 1. Zygophyl- 



[lum, 

 AA. Ovary stalked: lvs. abruptly pinnate 2. (luaiacum. 



44. GERANIACE.ffi. 



A. Fls. irregular, the posterior sepal spurred; 



spur adnate to the pedicel 1- Pelargonium. 



AA. Fls. regular or nearly so. 



B. Stamens 10, usually all fertile: tails of car- 



pels usually not bearded inside 2. Geranium. 



BB. Stamens, 5 fertile and 5 reduced to scales; 



tails of carpels u.sually bearded inside 3. Erodium. 



BBB. Stamens 15, anther-bearing, in groups of 5 .. 4. Monsoma. 



45. TROP.SOLACE.ffi. 



The only genus Tropxolum. 



46. LIMNANTHACEjE. 



In cultivation Limnanthes. 



47. OXALIDACE.ffi. 



A. Fr. a loculicidal caps. 



B. Valves of caps, separating to the middle. 



BB. Valves of caps, separating to the base. . . 



AA. Fr. an indehiscent berry 



1. Oialis. 



2. liiophytum. 



3. Averrhoa, 



48. BALSAMINACEiE. 



In cultivation Impatims. 



38. TILIACE.ffi. 



A. Calyx bell-shaped, 3-5-cut 1. Berria. 



AA. Calyx composed of distinct sepals. 



B. Petals pitted at the ba.se, inserted around 

 the base of a more or less elevated torus. 

 c. Fr. unarmed, glabrous, or tomentose .... 2. Grewia. 



cc. Fr. echinate or .setose ■ ■ 3. Triumfetta. 



BB. Petals not pitted, inserted immediately 

 around the stamens, 

 c. Fr. indehiscent globose, usually 1-seeded... 4. I Uia. 

 cc. Fr. a caps. 



D. Caps, loculicidally dehiscent. 

 E. The stamens all bear anthers. 



F. The caps. globo-*e, echinate 5. Enlelca. 



r?. The caps. pod-Uke, asually naked. . li. Corchurua. 

 EE. The outer stamens have no anthers. . . 7. Sparmannia. 

 DD. Caps, dehi-icing at the apex 8. Luehea. 



39. EL^OCARPACE.ffi. 



I berry I- Arittotelia. 



AA. Fr. a drupe. .'.'.' 2. Elxomrpus. 



AAA. Fr. a dehiscent loculicidal caps 3. Tricuapul- 



[aria. 



. Fr. a I 



40. LINACE.ffi. 



A. Styles 5: lvs. entire: glands equal 1. Linum. 



AA. Styles .V4: lvs, usually serrate: glands umially 



unequal or absent 2, Reinwardtia. 



41. ERYTHROXYLACE^. 



In cultivation Erglhraxgton. 



49. RUTACE.ffi. 



A. Ovary entire or slightly 2-5-lobed; style ter- 

 minal, entire at base: fr. drupe-like or berry- 

 like, but leathery, usually indehiscent. 

 B. Fls. hermaphrodite; petals and stamens 

 free or connate; ovules 1, 2 or many: fr. 

 usually with a cortex outside and pulpy 

 within; seeds ex-albuminous. (Subfamily 

 Citrala.J 

 c. Cotyledons thin and twisted in seed : f rs. 



jfy , 1, Micromelum. 



cc. Cotyledons thick and fleshy, plano-con- 

 vex: frs. more or less fleshy or pulpy. 

 D, Thorns absent: lvs. pinnate; Ifts. alter- 

 nate on rachis: frs. fleshy lierries. 

 E. Styles very short and thick, persis- 

 tent; fls. small, urceolate: young 

 growth densely covered with brown 



velvety pubescence 2. Glycosmis. 



EE. Styles long or, if short, dehiscent. 

 F. Fls, small: ovarial cells with scat- 

 tered hairs: frs. with thick fleshy 



dissepiments ■ 3- Claucena. 



FF. Fls. large: ovarial cells with tufted 

 conducting hairs: frs. fleshy but 



with thin dissepiments 4. Chalcaa. 



DD. Thorns usually present: lvs. .simple or, 



if compound, with the lateral Ifts. 



exactly opposite. (Tribe Citrea;.) 



E. Frs. large, hard-shelled; cells filled 



with mucilage. (Subtribe yEglinSB.) 



p. Lvs. pinnate: ovary .5-ielled but 



by confluence becoming 1-eelled. 



a. Seeds woolly; exocarp woody, 



continuous o. Feroma. 



aa. Seeds smooth; exocarp prismatic. 0. Feroniella. 

 FT. Lvs. trifoliate or simple: ovary 

 6-15-celled. 



