MONOCOTYLEDONS. ORCHIDE.l^:. OrcMs'. 187 



•2. A. ranunculo'ides, leaves linear-lanceolate, fruit globose squar- 

 roee, pericarps acute, p. 115. — Bogs and dilckes. 



Order XIII. HYDROCHARIDE.E. Rich. 



Perianths — 6-parted, the three inner segments petaloid. S/an/.o 

 epigynous. Ot'ft'y inferior. Sligfuas '3 — 6. Denij with in\e 

 or more cells. Embryo straight, in a direction contrary to 

 that of the seed; very rarely with a dilated base. — heaves ra- 

 dical, often floating, rarely rigid and submersed. Flowers 

 white. Rich. 



1. MYDROCIIAIIIS. 



Flowers dioecious, with the three inner segments of the perianth 

 the largest, petaloid. Barren Fl. Slam, [}, " the three in- 

 terior fihments beaked." Sm. 



Fertile FL Styles 6, each with two stigynas. Berry round- 

 ish, 6-celled, many-seeded. 

 1. H. Mors'us Ranee, p. 290. — Ditches. 

 2. STRATIOTKS. 



Spatha of two carinated leaves. Three interior segments of the 

 perianth very large, petaloid. Stam, about 20. Styles Q, 

 bifid. Berry angular, with 6 cells, many- seeded. 



1. Str. aloides, leaves ensiform triangular aculeato-serratc. p. 17 1. 

 — Ditches. 



Order XIV. ORCHIDE.E. Jirs-s-. Br. 



Perianth {Corolla of authors) 6- partite, with 1 segment {lahcl- 

 lum or lip) of a different form from the others. Organs of 

 fructification united into a column. Anther I or rarely 2. 

 Pollen cohering in masses of a determinate figure, and usually 

 falling out of its cells. Capmle 3- or 6 valved, with nume- 

 rous minute 5ee(/5 adhering to three parietalrerep/wcZe^. — Rerhs 

 or vndershruhs. Root tuberous or fibrous. Slein simple, 

 rarely divided, leafy or sheathed. Leaves simple, entire, 

 sheathing at the base. Flowers spiked, racemed, corymbose 

 or solitary, rarely paniculated. Pubescence, when it exists, 

 simple, acute, sometimes tipped with a glandular head. Br. 



{Monandrous), 



* Anther adnate, nearly terminal, persistent. Pollen mass, composed 

 of angular gramdes elastically cohering, fixed by its base. Br. 



1. ORCHIS. 



Cor. ringcnt. Lip spurred on the underside at the base. Glands 



