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CLARKE — THE CYPEKACEAE OF COSTA RICA. 459 



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8. BULBOSTYLIS Kmitli/^ 



Fortilo glumes Urfually ininuU'ly pilo^^c; style lon*^% ^;l(Mul^r, gl;il)ruii.s, i(s hraiichos !!, 

 linear; style base extremely sina-11, at length, :if(er tlie falling away nf the style heconi- 

 ing dark colored and remaining attaelnnl to ilie nut; otlnTwise like Fimbristylis, 

 Stolons none. Stems tufted^ slender^ naked. T.(^aves s(^ta<'eous, or at lea^^t extremely 

 narrow; sheathsalmost always ciliate or bearded nt the ori flee. Inflorescence umb<^lled 

 or of one head or spikelet. 



Species 80, dispersed through all warm countries; particularly in Africaand America. 



KEY TO THK STKCIKS. 



Stem bearing a solitary spikelet 1. B. paradoxa. 



4 



Spikelets umbellate, 



SpikeletSj at least some of them ^ fascicled 2. B, jtutciforniLs- 



Spikelets pedicellate ' , . 3. B. capillaris. 



1. Bulbostylis paradoxa Kunth, Enum. 2 : 200. 18o7. 

 Schoenus paradoxus Spreng. Syst. 1 : 190. 1825. 

 Oncostylis paradoxa Xees in Mart. Fl. Bras. 2 : 81. 1843, 

 Isolepis paradoxa Steud, Syn, PL Glum. 2 : 100. 1855. 

 Scirpus paradoxus BoeckL Linnaea 36 : 739. 18G9-70, 

 Rynchospora perrigida Boeckl. Allg(nn. Bot. Zeits<'hr. 2 : 03. 1890. 



Culm 8 to 16 cm, long, glabrous, bearing a ^^ingle spike; spikelets ellipsoid, whitr- 

 h\nate; stylo 3-fid; nut oboyoid, pale bnnvn; transversely undulat<»-zoned; slyb' })aso 



at length h^ft upon the nut. 



DiSTRTBUTiox: Tropical South America, frequent. 



Costa Rican collectioxs: Piti'nr tt J'onduz 2098 b; l)urnt savannas at Buenos 

 Aires, Tonduz 3590. 



2. Bulbostylis junciformis (_IL B. K.) Kunth, Enum. 2 : 211. 1837. 

 holepis junciformis H. B. K. Noy. Gen. Sp. 1: 222. 1815. 

 Sairpits hwmboldtii Spreng. Syst. 1 : 213. 1825. 



OnrosffjUs junciformis Nees in Mart. Kl. 2' : 85. 1843. 

 Isolepis berlandieri Steud. Syn. PI. Glum. 2 : 103. 1855. 

 Distribution: From Mexico to Montevideo, frcHiut^it. 



Costa Rican collections: Boruca, altitude 450 meters, Tonduz, 4,4S1; Buenos 

 Aires, altitude 300 meters, Tonduz 4,883. 



3. BulbostyUs capiUaris (L.) 0. B. Clarke in TTook. V]. Brit, Ind. 6: 652. 1894.^ 

 Sdrpvs capiUaris L. Sp. PI. 2; 49. 1753. 



Cyperus minimus L. Sp. PI. 1: 44. 1753, in part. 

 Isolepis capiUaris Room. & Schult. Syst. 2; 118. 1824. 

 Oncostylis temtifoUa Noes in Mart. Fl. Bras. 2' ; 83. 1842. 

 Oncostylis clliala Nees^ op. eit. 83. 

 Fimbristylis capiUaris A. Gray, Man. 530. 1848. 

 Trivlu'loslylis capiUaris \V(jod, Class-Book 742. ISGl. 

 Scirpus microstachy s J^OQc]d. Cyp. Nov. 2: 11. 1890. 

 Slenophglliis capiUaris Britton, Bidl. Torr. CIuIj 21: .'>0. 1894. 



DiSTKiiitTiuN: From Canada to Argeuiijia. eommon. Subspi'cies trifida com- 

 mon in warmer parts of the OUl World. 



Costa Ricax collections: Nieoya, Tonduz 13742 bis. 



^ Bulbostylis Kunth is ant<^dated by Stennphyllus Buf. — Editor. 

 b Mr. Clarkt credits this combination U) Kunlh, Enum. 2: 211, cf. 205, 1837, Imt 

 the binomial can hardly l>eregardc(.l as technically pulilishcd by Kunth. — Kinroii. 



