ANALYSIS OF THE NATURAL ORDEHS. 13 



F. COHOKT 6. FLORIDE^E, OR FLOWERING ENDOGENS. 



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

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

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

 2 Perianth free from the ovary. (3) 



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

 3 Petals and sepals similarly colored.. (5) 

 4 Flowers imperfect (<J ? or $ 8 9).. (a) 

 4 Flowers perfect.. (b) 



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

 5 Leaves parallel-veined.. (6] 



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

 G Styles and stigmas 3, distinct.. (n) 



a Low aquatic herbs HYDROCHARIDACE^E. 135 



a Climbing shrubby vines DIOSCORIACE^E. 143 



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



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



b Antht-rs 3 or G..(c) 



c Perianth woolly or mealy outside. Ovary half free ILEMADORACE.K. 141 



C Perianth glabrous outside, .(d) 



d Anthers 3, opening crosswise, inward BURMANNIACE.E. 13"> 



d Anthers 3, opening lengthwise, outward IRIDACE.*:. 142 



d Anthers G, opening inward AMARYLLIDACE^. 13;) 



t Pistils 3 GO, 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. 14G 



g Leaves alternate.. (h) 



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



h Stigmas united into 1 COMMELYN ACETE. 151 



k Flowers perfect, 4-parted RoxBUROHlACB/E. 14.1 



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



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



m Flowers colored, irregular or else triandrous PONTEDERIACE/E. 14!) 



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



n Leaves rush-like. Ovary of 3 1-seeded carpels { MELANTHACE^E 148 



n Leaves linear, lanceolate, &c. Ovary G- GO -seeded. .. > " 



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



o Petals white, minute, fringed. Plant acaulesccut.. ..ERIOCAULONACE.B. 154 



G. COHORT 7. GRAMIXOIDE.E, OR GRASS-LIKE ENDOGENS. 



Flowcn with G bracts in 2 whorls (sepals and petals). Culms solid ORDBS 150 



Flower with a single bract (glume). Culm solid, sheaths entire CYPERACE.E. 15 j 



Flower with several bracts (glumes and pales). Culm hollow, f GRAMINEA "*6 



Sheaths split on one side. Ovary 1-eeeded. Styles 2 f **" 



H. PROVINCE, ACROGENS. 



Plants with well-developed foliage. .(^) 

 T Leaves few, mostly ample and /rom subterranean rhizomes.. () 



