ANALYSIS OF THE NATURAL ORDERS. 219 



**. COHORT 6. FLORIDE2E, OB FLOWERING MONOCOTYLEDON ES. 



Flowers (not on a spadix) in a small, dense, involucrate head. .(o) 

 Flowers (not on a spadix) solitary, racemed, spicate, &c.'.(2) 

 2 Perianth tube adherent to the ovary wholly or partly. .(4) 

 8 Perianth free from the ovary. (3) 



8 Petals and sepals differently colored (except in Medeola, 147).. (0) 

 3 Petals and sepals similarly colored. .(5) 

 4 Flowers imperfect (3 ? or & fi ?)..(a) 

 4 Flowers perfect.. (6) 



5 Leaves net-veined, broad.. (k) 

 5 Leaves parallel-veined.. (6) 



6 Styles and often the stigmas also united into one. .(m) 

 6 Styles and etigmas 3, distinct.. () 



a Low aquatic herbs HYDROCHARIDACEJE. '<38 



a Climbing shrubby vines DIOSCORIACE^E. 143 



b Anthers 1 or 2, on the pistil (gynandrous) ORCHIDACE.B. 137 



b Anthers 1 or 5, free from the pistil. Leaves ample SCITAMINB^E. 138 



b Anthers 3 or 6.. (c) 



c Perianth woolly or mealy outside. Ovary half free HJEMADORACE.B 141 



e Perianth glabrous outside. . (d) 



d Anthers 3, opening crosswise, inward BURMANNIACE.E. 136 



d Anthers 3, opening lengthwise, outward IRIDACE^E. 142 



d Anthers 6, opening inward AMARYLLIDACE^E. 139 



Pistils 3 00, distinct, forming achenia in fruit ALISMACE.E. 134 



Pistils 3 only, more or less united, .(g) 



g Leaves verticillate, in 1 or 2 whorls. Stigmas 3 TRILLIACE.E. 146 



g Leaves alternate. . (h) 



h Stigmas 3. Plants with dry leaves, often epiphytes BROMELIACE^E. 140 



h Stigmas united into 1 COMMELTNACE^E. 151 



k Flowers perfect, 4-parted ROXBURGHIACE^E. 145 



k Flowers dioecious, 6-parted SMILACE^E. 144 



m Flowers colored, regular. Stamens 6 (4 in one species) LILIACE^E. 147 



m Flowers colored, irregular or else triandrous PONTEDERIACE^E. 149 



m Flowers greenish, glume-like or scarious JUNCACE^E. 150 



n Leaves rash-like. Ovary- of 3 1-seeded carpels I ]yi ELANTHACE ^ B 143 



n Leaves linear, lanceolate, &c. Ovary 6- 00 -seeded. . . ' 



o Petals yellow, small but showy. Plant acaulescent XYRIDACE^. 152 



o Petals white, minute, fringed. Plant acaulescent EKIOCAULONACE^:. 154 



G. COHORT 7. GRAMINOIDE^E, OR GRASS-LIKE MONOCOTYLEDONES. 



Flowers with 6 bracts in 2 whorls (sepals and petals). Culms solid ORDER 150 



Flower with a single bract (glume). Culm solid, sheaths entire CTPERACE^B 153 



Flower with several bracts (glumes and pales). Culm hollow. I n 



Sheaths split on one side. Ovary 1-seeded. Styles 2 > WRAMINE.E ] 



SUB-KINGDOM n. CLASS I. COHORTS 1, 2, and 3. 



Plants with well-developed foliage. .(5). 

 t Leaves few, mostly ample and from subterranean rhizomes ,, (a) 



