GKKAMACK-E. 357 



Okdeu XXXII. (.KKAMACK.E. 



]5V \V. TUKI.KASK. 



Herbaceous or sufTrutesceiit terrestrial or luarsli plants (hi our rorrion). of 

 various duration. Leaves alternate or occasinnally oppoKite or pM-u.lo-vrrtiril- 

 late, simple, parted or compound, mostly cut-toothed, tlie petiole comnionlv with 

 stii)ular eulargements. Flowers either evidently cymose, solit^iry and t.-rminal. 

 or seemingly racemose or umbellate, usually thowy, variously coI(»re«l. p.-rf«Tt. 

 mostly 5-merous (3-G-merous in IJmnanthece, and tlie earliest Howor of Oxalit 

 not infrequently 6-merous), symmetrical, nearly liypogynous. Glands of tlie 

 receptacle as many as the sepals and opposite them (reduced and op|>osite the 

 petals in Oxalt's), or wanting when the flower is spurred. Sepals and petals dis- 

 tinct or nearly so. Stamens mostly twice as numerous as the pet^ils, digtinn (or 

 somewhat connate in Oxali's and Impatiens) ; anthers round-oval, more or Ies§ 

 versatile, 2-celled, with longitudinal dehiscence. Carpels as many as and alter- 

 nate with the sepals, united about a columnar prolongation of the recepuicle 

 except in Limnanthece ; ovary usually deej)ly lobed, its cells l-nianv-<»vul»'<l; 

 styles mostly united below, the capitate or lateral stigmas usuallv distinct. See<ls 

 exalbuminous or nearly so except in Oralis; embr\o straight or l>ent, the 



cotyledons somewhat plicate and lobed in the genera with di.ssected leaves. 



Five very distinct tribes or suborders, which are generally treated as orders bv 

 Continental writers. 



Tribe I. GERANIE.S. Flowers regidar or nearly so, ."Vmerous. Sopals imbricate, 

 persistent, enlarging somewhat in fruit. Petals iml.ricatc. deciduous. AntlnTif- 

 erous stamens as many as and opjiosite the sepals, or twico as many, with p-rsi.st- 

 ent filaments. Glands of receptacle consjiicuous. Carpels 2-ovuled, In'roniing 

 1-seeded, breaking elastically from the persistent fluted beak ; seeds with little 

 albumen ; embryo with sinuously folded incumbent cotyledons. 



1. GERANIUM. Leaves radiately divided. Peduncles 1- or nnwtly 2-flowered. Flowers 

 regular. Stamens with anthers 10, except in G. pusillum. Hipeiied carpels dehiment on 

 the inner suture, the stylar portion merely arched, and nearly glabroiu on the inner tide; 

 seed often alveolate. 



2. ERODIUM. Leaves often pinnately lohed or dissected. Pediincle.M mostlv nnil>e]I.nto1r 

 several-flowered. Upper pet.als slifjlitly smaller than the others. Anthcriffron<< itt.inHn!< 5. 

 Kipened carpels sharp-pointed l)eliiw, at ni<>.*t tardily dehi.^cent, the .ntylar prolongation wlicn 

 freed spirally twisting lielow, liearded on the inner side ; seed smooth. 



Tribe II. PEL.VRGOXIK.E. Flowers somewhat irrcgidar. Sepals iuibrioate. the 

 posterior spurred. Antheriferous stamens neither n» many nor twice as nianv as 

 the jietals. Glands of receptacle wanting. Seeds exalbuminous. 



3. PELARGONIUM. Spur decurrcnt and .idnato to the pedicel. .*?tanion» 10. or fewer 

 by ahortioii, 7 usually with antliers. Carpels .'i, L'ovuled. at length dry, 1 ii*-fdc«l. pliinird, 

 heaked, liroakintr from the axis and coiling :us in /\r,>,lnim. 



4. TROP.S:OLUM. Spur free. Stamens 8, all with anthers. CarpeU 3. l-oruW, flwhr, 

 beakless. 



