MONOCOTYLEDOXOUS OR ENDOGENOUS PLANTS. 571 



SYNOPSIS. 



Tribe I. Cypereae. Floivers perfect. Spikelets 1- 

 many-flowered. Scales one to each flower, imbricated in 

 2 rows. Perianth bristly, or none. 



* Perianth none ; nut beakless. 



Spikelets few-many-flowered. Inflorescence terminal Ctperus. 



1-flowered. Inflorescence terminal, capitate Ktllinqia. 



** Perianth bristly ; nut beaked. 



Spikes lateral and terminal. Spikelets mamj-flowered Dulichium. 



Tribe II. Lipocarpheae. Flowers perfect. Spikes 

 many-flowered. Scales 2-4 to each flower, the exterior 

 ones imbricated in many rows. Perianth none. 



Inner scale 1. Involucre mostly 1-leaved, erect Hemicarpha. 



Inner scales 2. Leaves of the involucre 2 or more, spreading Lipocarpha. 



Tribe III. Scirpeae. Flowers perfect. Spikes com- 

 monly many-flowered. Scales one to each flower, imbri- 

 cated in several (rarely 2) rows, all fruitful, or the lowest 

 empty. Perianth bristly, hairy, or wanting. 



* Perianth of 3 bristles, alternating vnth 3 stalked scales. 

 Nutpointed. Scales of the clustered axillary and terminal spikes awned . .Yvtirt^ka. 



** Penanth bristly, occasionally wanting. 

 Nut tubercled. Culms leafless, sheathed at the base, bearing one terminal spike. 



ELE0CHAR18. 



Tubercle none. Culms mostly leafy at the base or throughout. Spikes comrrufnlyfew 



or many. Perianth of S-6 bristles Scirpus. 



Penanth of numerous long and woolly hairs ERioPHORtrsi. 



*** Perianth none ; style tumid at the base. 



i Scales imbricated in several rows ; spikes terete. 



Styles deciduous. Stigmas 2. Nut lenticular or globose Fimbristtlis. 



3. Sangled Trichelosttlis. 



persistent at the base. Stigmas 3. Nut Z-angled Isolepis. 



tt Scales imbricated in 2 rows ; spike compressed. 



Style Z-cleft, jrnnted to tlie Z-angled nut Abilqaardia. 



