MACLOSKIE : CYPERACE^E. 257 



AA. Diclinous. Perianth none ; but achene enclosed in a utricle. 



b. Spikelets monoecious, the male spikelets above, many-flowered ; the females below in the 



same spike, I -flowered. Floral axis prolonged, often hooked. 8. Uncinia. 



bb. Spikelets monoecious or dioecious, all i -flowered, each in the axil of a glume, forming 

 male and female or androgynous spikes. 9. Carex. 



i. CARPHA R. Br. 



Low, grass-like, with leaves crowded at the base, and many spikelets in . 

 a terminal inflorescence with a few long leaf-like bracts. Spikelets nar- 

 row, i-2-flowered. Hypogynous setce 6, plumose, persisting like a 

 pappus. Style 3-branched. Achene 3-angled. 



Species 2, C. alpina R. Br. in Austral., Tasm. & N. Zeal., and 

 the following: 



C. SCHCENOIDES Banks & Sol. 



Culms cespitose, to 2 cm. tall, terete, smooth. 

 Leaves half as long, semiterete. Spikelets about 

 2-flowered, in a few-spiculate panicle. 



(Chili); Patagon., Eden; N. and S. Fuegia, 

 on hills; Desolation L in W. Magell. (Dusen.) 



2. CYPERUS Linn. 



Culms leafy near the base, with one or more in- 

 volucrate leaves under the inflorescence. Spike- 

 lets mostly flat, in umbellate spikes or heads ; at FIG. 44. 

 least two of their flowers perfect ; their scales 2- Carpha schanoides. Spikeiet 

 ranked. Perianth none; stamens 1-3. (Brit. & and fruit ( From Flora antarc - 



. tica.) 



Br. i, 235.) 



Species 400, in tropical and subtropical regions, chiefly in moist places 

 and near water. 



KEY TO THE SPECIES. 



a. Culm triangular. 



b. Umbel i-5-rayed. Bracts 3-4. Achenes fuscescent, punctulate. Awns uncinate. 



aristatus. 

 b2. Umbel few-rayed. Bracts 3. Achenes dark-chestnut, punctulate. Culms short ; spikes 



compound. poeppigii. 



3. Umbel 5-8-rayed, rays very short. Bracts 4. Achenes compressed, punctulate. Sides 

 of scales dark- or blood-chestnut. melanostachyus-variegatus. 



i>4. Umbel 12-rayed. Bracts 6-8. Achenes brown. Tall, with long leaves. 



vegetus. 



