460 CONTFJBUTIOXS FROM THE NATION A7. HKRBAT^TUM. 



9. SCIRPTTS L. 



Spikolpts Willi sov<n-al or many povforl fl(.\v<T>'; ](>wesi (nic or Iwo gluina^ sonirlinioK 

 empty, ihoso noxl snroooding bisexual, p<'rf(vtin^^ imts, the n|)pi'rrno.st iinporffH-t ; 

 glumos in .several .'spirals, f^labrous except nuir^^itnilly; slyle 11 or 2-(i(l, its base not 

 cnlargtHl, but passing gradually iuto tlic top of the ovary. Slu^atbs of the loaves not 

 ciliato or bearded at the orifice. 



Species 130, diffused all over the -world. 



Style persistent, its l>ranches 3, rather long ] , S. inundalas. 



Style deciduous, its branches 2, very short 2. S. vUcrfmfhus. 



1. Scirpus inimdatus Toir. Encyc. SuppL 6: 103. 1817, 



Isolepis inundata R. Br, Pnxl. Fl. Nov. HoU. 1: 222. bSIO. 



Isolepis niyricana II. B. K. Nov. Gen. & Sp. 1: 220. 1815. 



Scirpiis nigricans Poir. Encyc. Suppl. 5: 104. 1817. 



Stem 2 to 20 cm. h>ng, nionocephalous; tspikelets 2 to 14, capitate, 4 to 8 mjn. long; 

 hypogynous bristles none; .^tyle S-fid; nut oblong-ob(.void. mimitely conic-rostrate,' 

 smooth, yellow brown. 



Distribution: Australia, New Zealand, and western South America, coninnui. 

 Costa Rican collections: Pods, altitude 2,500 meters, Piftier^ 2979; Tonduz 

 107C0; Irazii, altitude 2,300 meters, Pillier 853. 



I 



Scirpus micranthus Yahl, Enum. 2: 254. 1806. 

 Isolepis viicraiilha Roeui. & Schult. 2: 110. 1817. 



Ilemicarpha suhsqiinrrosa Nees in ^tari. Fl. Bras. 2': 01. pL 4,f, I. 1842. 

 Isolepis caespiiula Liebm. Dansk. AMd. Selsk. Skr. 2: 49. 1849. 

 Distribution: Angola; also frequent in almost all parts (^f Ann^rica. 

 CoHTA RicAN collectton: Talamanca, altitude 100 nuaers. Tonduz9,m7. 



SPECIES OF SCIRI'US TO BE LOOKED FOR IN COSTA RICA. 



SciHPus cuBENSis Kunth, Enum. 2: 172. 1837. 

 Anosporum cubense BoeckL Linnaea 36: 413. 1809-70. 



Crepidocarpus cubensis Klotzsch; Boeckh Linnaea 36: 414. 18G9-70, as synonym. 

 Isolepis echinocephala Oliver, Trans. Linn. Soc. 29: 167. pJ. 107. 1875. 

 Spikes globose, dense, loosely umbellate; hypogynous iiristles none; style l)irKl. 

 Distribution: Tropical Africa and America, fn^quent. 



10. FUIRENA Rottb. 



(liaraclers of Scirpus except as to tlie 3 inner hypogynous hrisUes,t]ieflel)eingobovate 

 and shaped like petals.— Stejus nodose iil)ove \\\v base and leafy. Inn<.resc(uice not 

 umbellate. Glumes aristate, hispid-pilose. 



Species 35, dispersed in the warmer parts of the whiAv world. 



1. Fuirena 



1773. 



i. e.. second pL lS]f. S. 



Distjubution: Common in almost all warm countries. 



Costa Rican collectu>\s: Talamanca, altitude 100 meters Toruhr 92'^^- M uini 

 Pillier 10310. ' ^ — ■ ^ ^ ^ , 



11. DULICHIUM L. C. Rich. 



Spikeletfi 5 to S-Howered; glumes in 2 ranks; hypogjnious bristles G to 8; style long, 

 its ba^e passing gradually into tlu^ summit of the ovary, its blanches 2, short; nut 

 ot)l(>ng, plano-convex.— Stem rather stout, clos(4y join(e<l throughout.; the lower 

 sheatlLs ending in a leaf, the iipp(T m a bract. -RachiUa ;us in Torulinium breaking 



