426 XXXII. GERANiACEiE. (Edgeworth & Hook, f.) 



Order XXXII. GERANIACEiC. (By M. P. Edgeworth, F.L.S., 

 and J. D. Hooker.) 



Herbs, undershrubs, or rarely trees ; glabrous or more usually pubescent 

 and glandular. Leaves opposite or alternate, usually 2-stipulate. Pedundes 

 usually solitary and axillary, 1- or more-flowered. Mowers umbelled 

 cymose or racemose, usually showy, hermaphrodite, regular or irregular. 

 iSepals 5, rarely 4 or 2, free or united to the middle, imbricate or rarely val- 

 vate, the posticous sometimes spurred. Petals as many as the sepals or 

 fewer by suppression, of 0, hypogynous or subperigynous, variously imbri- 

 cated, rarely contorted. Torus scarcely expanded into a disk with 6 glands 

 alternating witli the petals, or without glands, raised in the centre into a 

 beak, rarely flat. Stamens as many as or double or treble the sepals, or fewer 

 by suppression ; filaments filiform or dilated, or connate into a ring ; anthers 

 2-celled, cells parallel, opening lengthwise. Ovary 3-5-lobed, 3-5-celled, 

 rarely 2-lobed, of 3-5 carpels united with the axis as far as the insertion of 

 the ovules, sometimes lengthened into a beak-bearing style, or styles which 

 are free or more or less united, stigmas capitate linear or Ugulate ; ovules 

 1 or 2 or rarely more, horizontal or pendulous or ascending. Fruit capsular, 

 3-5-lobed, lobes 1-seeded often Separating from the axis septicidal or locu- 

 licidal rarely berried. Seeds pendulous or horizontal, albumen or scanty 

 or fleshy : embryo straight or curved, cotyledons flat convex or variously 

 folded foliaceous or thick or fleshy, radicle either short and near the hilum 

 or longer and inflected or incumbent on the cotyledons. — Distkib. Genera 

 20, with about 800 species, chieflyfound in temperate climates. 



Besides the genera described below, Pelargonium (the garden so called Geranium) 

 is cultivated thvoughoat India, and one species of Natal (P. grossularioides, D 0. ; 

 Erodium nilagiricum, Schlecht. PI Ind. Or. exsicc. 1560), is naturalized in the Nil- 

 gliiris. The genus is distinguished by the posticous sepal being produced into a spur 

 which is adnate to the pedicel and by some of the filaments being antherless. 



Teibe 1. Geranleee. Leaves simple or compound. Flowers regular or 

 nearly so. Sepals imbricate. Glands alternate with the petals. Antkerir 

 ferous stamens as many or double or treble the number of petals. 



Carpels indehiscent ; not beaked. Ovules solitary. 



Stamens 10, all perfect 1. Bieberstehiia. 



Carpels beaked, dehiscent. Ovules geminate. 



Perfect stamens 15, pentadelphous 2. Monsokia. 



Perfect stamens 10, rarely fewer 3. Geranium. 



Perfect stamens 6, staminodes 5 4. EEODinM. 



Tribe 2. Oxalideee. Leaves compound. Flowers regular. Sepals imbri- 

 cate. Glands 0. Stigmas capitate. Ovules 2 or more. 



* Herbs. Fruit capsvlar. 



Stamens 10. Capsule locnlioidal, valves cohering with the axis. 



Leaves 3-oo -foliate 5. Oialis. 



Stamens 10. Capsule looulicidal, valves uBually separating from 



the axis to the base. Leaves pinnate 6. Biophttdm. 



** Trees or shrubs. Fruit berried. 



Stamens 10, or 5 and 5 staminodes. Ovules many. Leaves 



pinnate 6.* Aveerhoa. 



Stamens 10. Ovules in pairs. Leaves 1-3-foliolate 7. Connaeopsis. 



