506 MANUAL OF NATURAL HISTORY. 



II. TKIBE. EPIGYNOUS-ENDOGENS (Phyllosynaptse). 

 Flowers adherent to the ovary. 



I. ORDER ORCHIDALS (Orchidales). 

 Stamens 1-3; albumen none. 



1. FAMILY. Apostasiads (Apostasiacese). Herbs, 



perennial ; leaves firm, thin, sheathing ; 

 flowers racemose, terminal ; perianth 6-divid- 

 ed; anthers 2-3, sessile on a short column, 

 erect, 2-celled ; style filiform, with a 3-lobed 

 stigma as long as the anthers, and adherent 

 with the filaments into a short column : 

 ovary 3-celled ; placentse three, axile, poly- 

 spermous; fruit capsular, 3-celled, 3-valved; 

 seeds 0. Occur in damp, hot Indian woods. 



2. FAMILY. Orchids (Orchidaceae). Herbs or shrubs ; 



roots fibrous or tubercular; stem long and 

 annual, perennial and woody, or none ; leaves 

 often sheathing ; flowers solitary, clustered, 

 spiked, racemose, or panicled, always sup- 

 ported by a solitary bract ; perianth herba- 

 ceous or coloured, membranous or fleshy, 

 6-partite, the segments arranged in two rows, 

 the outer, or calycine (but according to Lind- 

 ley the corolla), of three parts ; the inner, or 

 corrolliform (petaloid stamens of Lindley), of 

 three divisions, rarely one, the odd one being 

 the labellwn or lip ; stamens three, the 

 lateral ones usually sterile; anthers 1-2-4- 

 celled ; ovary 1 -celled, of six carpels, three 



