u 



A SYNOPSIS OF THE VEGETABLE KINGDOM. 



B. Petals marcescent : sta- 

 mens 9 ; carpels 3. Butomus. 



BE. Petals deciduous: sta- 

 mens numerous : car- 

 pels 15-20 -I. I.I.MNOCHAEIS. 



160. NAIADACE.E. 



A. Fls. hermaphrodite, spicate. 

 B. Perianth O : stamens 6 or 

 more, hypogynous ; car- 

 pels 3- cc -ovuled. de- 

 hiscent at maturity. ..1. Apon'Ogeton. 



(See also 2. Ouviran- 

 dra). 

 BB. Perianth segments 4 : sta- 

 mens 2 or 4, inserted 

 at base of perianth : 

 carpels 1-ovuled, inde- 



hiscent 3. Potamogeton. 



AA. Fls. unisexual, axillary : per- 

 ianth 0: stamens 1: car- 

 pels 1-ovuled i. Zaxnichellia. 



101. CYPERACE.E. 



A. The fis. strictly unisexual ; 

 in female spikelets 1-tld., 

 gpicate, enclosed by a 

 single bladder-like glume, 

 or the glume is split and 

 includes the fl. : male 

 spikelets 2- oo -fld.. term- 

 inal, or continuous with 

 the apex of the female 

 spike, rarely at the base 



of the female spike 1. Carex. 



AA. The fertile fls. hermaphro- 

 dite or rarely subfemale 

 with antherless filaments. 

 B. With several of the lower 



glumes empty 2. Mapania. 



BB. With only one of the 

 lower glumes empty. . . 



c. Glumes 2-ranked 



D. Hypogynous seta; 0. ,3. Cypebu-s. 

 DD. Hypogynous setse 8. .4. Dulichium. 

 cc. Glumes many ranked, 



overlapping 



D. Hypogynous seta 3- 



8. or 



E. Style persistent, 

 thickened and 

 hulb-like at base. 5. Eleocharis. 

 EE. Style not or hard- 

 ly thickened at 



base 8. Scirpus. 



DD. Hypogynous setse or 

 many, very long ex- 

 crescent after an- 

 thesis, b e c o m i ng 

 wavy or cottony. . .7. Eeiophorum. 



1G2. GRAMINE.E. 



(Following Hackel's " True Grasses," translated by 

 Scribuer and Southworth, 1800.) 



SYNOPSIS OF TRIBES. 



A. Spikelets 1-fld., rarely 2-fld., 

 lower flower when present 

 imperfect, falling from the 

 pedicel entire or together 

 with certain .loints of the 

 rachis at maturity. Ra- 

 chilla not, produced be- 

 yond the fls. Internodes 

 betw»een the d I tf e r e n t 

 glumes or fls. not measur- 

 able 



B. Hilum punctiform, spike- 

 lets not flattened Inter- 

 ally, but usually some- 

 what dorsally compress- 

 ed or else perfectly 



round 



C. Flowering glumes and 

 palea (the latter 

 often wanting) hya- 

 line. Empty glumes 

 thick, membranaceous 

 to coriaceous or car- 

 tHaginous, the lowest 



the largest, with its 

 edges embracing the 

 others. Spikelets 

 generally in racemes 

 or spikes whose artic- 

 ulate axes break up 



at maturity 



D. The male and female 

 spikelets in separate 

 inflorescences or on 

 different parts of 

 the same inflores- 

 cence 1 



DD. The spikelets either 

 all hermaphrodite 

 or male and herma- 

 phrodite and so ar- 

 ranged in the same 

 inflorescence that 

 a male stands near 

 an hermaphrodite. .2 



ccc. Flowering Klurae and 

 palea membranaceous, 

 empty glumes herba- 

 ceous or chartace- 

 ous ; the first empty 

 glume smaller or nar- 

 rower than the fol- 

 lowing ones. Spike- 

 lets failing off singly 

 from the ultimate 

 branches of the pan- 

 icle 



cccc. Flowering gkime and 

 palea cartilaginous, 

 coriaceous or char- 

 t a c e ous. Empty 

 glume more delicate, 

 usually herbaceous, 

 the first usually 

 smaller. Spikelets 

 falling off singly from 

 the ultimate branches 

 of the panicle or con- 

 tinuous (rarely artic- 

 ulate) rachis of a 

 spike 5 



ER. Hilura linear, spikelets 

 laterally compressed.. .6. 



AA. Spikelets 1- co -fld.. the 1- 

 fid. frequently with the 

 rachilla produced beyond 

 the fls.. rachilla generally 

 articulated above the 

 empty glumes, so that 

 these remain after the fall 

 of the fruiting glumes. 

 When 2-many-fld. there 

 are always distinct inter- 

 nodes between the fls. . . . 

 B. Culm herbaceous, annual ; 

 leaf blade not articu- 

 lated with the sheatb. 

 c. Spikelets upon distinct 

 (sometimes very 

 short) pedicels, in 

 panicles, spike-like 

 panicles, or racemes 

 (without notches in 



the main axis) 



D. Spikelets 1-fld 



E. Empty glumes 4. 

 palea 1 -nerved. . .7. 



EE, Empty glumes 2 

 (rarelv 0), palea 

 2-nerved S. 



.4. Teistegine.e. 



