SPRING FLORA OF MA^NllATTAN. 



Ovary 1-celled; leaves deeply parted, 



Ht/drophyllaceae o-t 

 Ovules numerous; ovury 2-c^\\ed . Sola naceae 58 

 Corolla irregular. 



Ovary deeply 4-lobed around the style Lahiatae 57 



Ovary not lobed. 



2-celled; ovules numerous ScmphularlHceae .59 



2-4-eelled; ovules 4 ]"erben(tceae 56 



DESCRIPTIVE LIST. 



MONOCOTYLEDON EAE. 



1 GRAMINE^. 

 Perianth none. Stamens usually 3. Ovary one, superior, 1-celled, 

 1-ovuled. Styles and stigmas 2. Fruit a caryopsis, the seed grown rast 

 to the pericarp. Flower in the axil of a bract (flowering glume) with a 

 2-keeled bract (palet) between the flower and the axis. The flowers are 

 arranged in 2 ranked clusters (spikelets), the two glumes at the base of 

 the spikelet being empty. The spikelets may be from one to many 

 flowered. Herbaceous plants with 2-ranked, alternate, nerved leaves 

 and sheaths split on the side opposite the blade 



1. Spikelets with usually 4 glumes and one perfect flower, jointed upo i 

 the pedicel below the glumes 



Spikelets in loose panicles .... Pduicum 



Spikelets in spike-like panicles Chamaeraphia 



2. Spikelets not jointed below the ghimes, 1-many flowered; glumes 

 3 when 1-flowered. 



a Spikelets 1-flowered, not on a z,ig-zag rhachis. 



Inflorescence loosely panicled. . . lyrostis^ 



Inflorescence spike-like Alopccunoi 



b. Spikelets dioecious; staminate in two rows, forming a 1-sided 



spike. . .'. Bnlhili.s- 



c Spikelets more than 1-flowered, pedieelled. 

 *Flowering glume 3-nerved. 



Empty glumes similar, acute. Kaeleria 



Empty glumes very dissimilar, upper very obtuse Eatonm 



* *Flowering glume 5-nerved 

 Glumes compressed and keeled. 



Awn-pointed; spikelets in 1-sided clusters DnctyU.f 



Not awn-pointed; spikelets in panicles Poa 



Glumes convex on back. 



Awn, if present, from tip of glume Fe/ituoi 



