Dapania.] 



XXIX. OXALIDACE^. 



335 



lanceolate acuminate; anthers ovate. Fruit 3 in. long, -4 in. 

 across after dehiscing. Hab. Dense jungle. Perak, Ulu Bubong 

 (Kunstler) ; Waterloo (Curtis); Tapa; Batang Padang (Wray). 

 Disirih. Sumatra. 



Order XXX. BALSAM IN ACE^^. 



Herbs usually succulent. Leaves opposite or alternate. Flowers 

 few on axillary or terminal racemes rarely branched. Sepals 3, 

 2 small, I at back petaloid spurred. Petals 3 or 5, outer large, 

 lateral bilobed. Stamens 5 ; anthers cohering. Ovary oblong 

 5-celled. Stigma sessile 5-toothed; ovules many. Capsule fleshy 

 loculicidal, valves 5 elastically springing away from the axis or 

 a drupe. Seeds smooth or tubercled. Species 600 or more, tropics 

 of Asia and Africa and North Temperate region. 



Lateral sepals connate in pairs ; fruit explosive . .1. Impatiens 



Lateral sepals free ; fruit drupaceous . , . .2. Hydrocera 



1. IMPATIENS, L. 



Succulent herbs. Leaves opposite or whorled or alternate. 

 Flowers axillary or terminal i rarely more flowered; peduncles 

 irregular resupinate, blue, white, pink, or yellow. Sepals 3, 

 rarely 5, imbricate, 2 minute or o, 2 lateral small green, i posterior 

 large petaloid spurred. Petals 3 (or 5) anterior large (standard), 

 lateral 2-lobed (wings). Stamens 5 ; filaments short thick ; anthers 

 cohering. Ovary oblong 5-celled; ovules many. Stigma sessile 

 5-fid. Capsule green pulpy loculicidally dehiscing elastically into 

 5 valves. Seeds numerous. Species about 600, whole world. 



Leaves opposite or whorled ; flowers pink ; spurred 

 sepal not funnel-shaped ; spur long. 

 Plant more or less hairy. 



Leaves narrow linear-lanceolate, lower ones 



sessile (i) I. Griffithii 



Leaves lanceolate acuminate, all petiolate. 

 Spur I in. long ; leaves not glaucous beneath, 



standard orbicular or obovate . . (2) I. Wrayii 



Spur I in. long; leaves glaucous beneath, 



standard obovate retuse . . • (3) I. sarcantha 



Spur 1-5 in. long; leaves lanceolate spinulose 



glaucous beneath . . . . . (4) I. polycycla 



Plant glabrous. 



Leaves ovate acute . . . . . (5) I. Curtisii 



Leaves lanceolate . (6) I. exilipes 



Leaves large serrate ; flowers large yellow . (7) I. oncidioides 

 Leaves alternate, spurred sepal funnel-shaped with 

 a short curved spur ; flowers not spreading. 

 Stem thick fleshy 2 to 5 ft. tall; flowers yellow . (9) I. mirabilis 

 Stem fleshy smaller ; flowers violet . . . (10) I. Vaughani 



