r 



CLAKKE — TILE CYPERACKAE OF COSTA KICA, 



i53 



Distribution: An American speciivs, frequent from C^alilurnia lu Vene/.uela. 

 Costa Rican collections: Hofmann 54; Saii Jose, altitude 1,100 meters, Coopfr 



Tondaz 



iacquinil 



Cyptr as Jlaroinariscus pedum: ularis }ir\iU)n^ Hull. To^r. Club 13; 215. 1880.^ 

 Smaller, bracts and spikcri narrower. li'Sri deeply colored. 

 Distribution: Frequent from ralifornia to Venc^zuela. 



Costa Rican collections: San Francisco de Guadalupe, altitude 1,100 motors, 

 Tondiizmi)9, 9043; San Jose, altitude 1,100 meters. Tondii: 1532. 

 Hardly, by its denser spikes, specifically distinct from JI, dissitijlorus. 



8. Mariscus dissitiflorus C. M. Tlarke in Urban, Synib. Antill. 2: 45. 1900. 

 Cy perns dissitijlorus Nees, Linnaea 9: 285. 1834. 



Cyperus ra7}duzii [toaduzii] tenuis Boeekl. All<rem. Dot. Zeitsch. 2: 17. 189(k 

 ' Distribution: Louisiana to Venezuela. 



Costa Rican collections: Biollfy 9401; Talanian(^a, altitude 200 inotfTs, Ton- 

 duz 9505; San Jose, altitudes 1,100 meters, Tonduz 1428, in part. 



8a. Mariscus dissitiflorus lucidior C. B. darke in Urban, Symb. Antill. 2: 45. 

 1900. 



Cyperus pseitdosphacelat as Boeckl, Cyp. N<)v. 2: 7. 1890. 



Distribution: Texas to Guiana. 



Costa Rican collections: Along n^ad at Guadalupe, Tonduz 97 SQ, 



9. Mariscus flabelliforniis IL B. K. Xov. Gen. & Sp. 1: 215. 1815. 

 Cyperus caracasanus Kunth, Enum. 2: 80. 1837. 



Cyperus hreviradiatus Liel^m. Daa^k. Vid. Selsk. Skr. 2: 2C. 1849. 



Cyperus har til Hoeck], Cyp. Nov. 1: 9. 1888. 



Distribution: Tropics of both Old and Xew Worlds, mon^ especially of the New. 



CosTA Rican collections: PoMoirshj 43^ 541; Salinas Bay, nttier 2717; 

 Rio Tuis, altitude 000 meters, Tondaz 8183; San Jose, altitude 1,100 jneters, Pittier 

 225; Tonduz 433; slopes of La Carpintera, altitude L700 nnitiTs \Pittier], 4335; Tur- 

 rialba, altitude 500 meters, Tonduz 8351; Alajuelita, altitude 1,000 meters. Tondaz 

 8842; Nicoya, Tonduz 137 li; Rio Zliorquin, Tondaz 8b'M; Talamanca, 7^01^/^^8737; 

 San Rafael, Pittier 2584; Puerto Viejo, Biolley 7401; Gollb dv Osa, Tondaz J0027. 



Cyperus harlil Boeckl. is a feebler form, the spikeh^ts sometimes hearing fi'W mits. 



Mariscus Jlabellif or mis differs from M. jaequinU f^ and M. dissitijlorus by having 

 tin* rays of its umb(d much shortt^r, while the spikelets are often longer. 



Here many species have been proposed Ijy various authors, which are not di;dtinct. 



10. Mariscus strigosus i^L.) C. B, Clarke. 

 , Cyperus strigosus L. Sp. PI. 1: 09. 1753. 



Rhizome hardly any; leavers and tra<'ts long, narrow, not spongiose; iuu1k4 siiuple 

 or compound; spikes short-cylindrie, dense, yellowdjrown; spikelets linear, flattened, 

 maturing to 8 nuts, divaricately spreading; glumes elliptic, scarcely acute, at 

 length obliquely spreading; style 3-fid; nut liTn'ar-ol)long, curved, half the huigth of 

 the glunn*. 



Distribution: United States, cojnmon. Also in M(>xi(V) and Costa Rica. 

 Costa Rican colle<:tions: Talamanca, Tonduz H7i(} ]nH. 



li. Mariscus saturatus (C. B. Clarke) DuJinell Smitli. 



Cyperus saturat((s C. B. Clarke, Engl. Bot. Jahrb. 37: 517. 1900, 

 Robust, leaves and bracts Itmg, rather bnjad, somewhat triple-nervrd; umln'l com- 

 pound, rather denscs spikelets in fascicles of 3 to 8 in a place, deep blood-red 



owly oblong, 12 to 20-flow<Ted; glumes in fruit hardly irn}>ri<:ate, their 



nar 



ttThis citation is made instead of Cyperus fiar us pcdancularis Britton, Proc. Anu 

 Acad, 21 : 442. 1880, used by Mr. Clarke, the latter name being a uomen nudum. 



