134 FLOfiA OF MADRAS. [Impatient. 



3. Impatiens, Linn. 



Annual or perennial herbs or rarely a little shrubby at the base. 

 Leaves simple. Flowers irregular, axillary, solitary fascicled 

 racemed or umbelled or sometimes scapose. Sepals 3 (or 5), 

 coloured, imbricate, 2 lateral ones small flat usually green, 

 posterior (lip), the lower in the flower, large, petaloid, often 

 spurred. Petals 3 (or 5) the anterior (standard) erect, the side 

 ones (wings) entire or 2-8-lobed, sometimes with a short or long 

 and slender appendage at the base. Stamens 5 ; anthers cohering, 

 nearly sessile. Disk 0. Ovary oblong, 5-celled ; ovules many, 

 1-seriate in each cell ; stigma sessile, 5-toothed. Capsule short 

 or long, loculicidally dehiscent ; valves 5, elastic. Seeds smooth 

 or tubercled ; albumen 0. 



(Analysis after Sir J. D. Hooker in Hec. Bot. Surv. Ind. iv. 37, 

 and subsequent descriptions.) 



Scapigerous plants with tuberous rootstock ; leaves all radical ; flowers 

 racemose; seeds very minute, clothed with spiral hairs (Section 1. 

 SCAPIGERAE) : 

 Lip with a very long incurved spur : 



Wings 2-lobed 1. acauli*. 



Wings 3-lobed 2. scapiflora. 



Lip with a short spur ; wings 3-lobed : 

 Dorsal auricle of wings obscure or : 



Spur of lip incurved, tip inflated 3. Beddomd. 



Spur of lip incurved, cylindric 4. Levingei. 



Spur of lip straight, standard entire 5. modexta. 



Spur of lip short, standard crenate 6. crenata. 



Dorsal auricle of wings produced into the spur of the lip : 

 Dorsal auricle long slender : 



Tall, spur of lip elongate 7. Denisonii. 



Dwarf, spur of lip short 8. Barberi. 



Dorsal auricle short spiniform 9. Lawsoni. 



Lip spurless 10. orchioides. 



Epiphytic perennial herbs, succulent, with very short simple or sparingly 

 branched, often annulate or articulate, stems ; leaves alternate, usually 

 fascicled at the ends of the branches ; flowers on simple or branching 

 few-flowered peduncles ; wings very short, thick, almost concealed in 

 the mouth of the lip and concave standard (Section 2. EPIPHYTICAE) : 

 Lip scarlet ; 



