. -, ^ ." --■ r^T* 



i 



CLARKE — -THE CYPERACEAE OF COSTA RTCA, 471 



Stem a nivivY high, ^toul; leaves 3 cni. lung; panicle amplo, Lroadly pyramidal 

 dense, often 12 cm. w'vdv: nut, with its long-eonie beak far surpassing tlie glume. 



DisTumuTiON'. Xiearagua, firazil, Costa Kiea. 



Costa Ricax collection' : Cocos Island, PUfirr 123vS0, 



Scarcely differs from //. amplum Kunthjt' a species dispers(^d through Guiana, 

 Sm"inam, and along ilie Amazon in Brazil. 



18. MAPANIA Alibi. 



Spikes densely capitate; proper spikelets appearinglike l>isexual Ouwers, G-squamel- 

 hite; two lower sqviamellae opposite. b(>at-shap(Ml, eacli with a single stamen^ the third 

 one lateral, plane, sterile or willi a stamc^n, ibis succeede<l by three that are sterile, 

 often delicate; uppii-most flower a single naked pistil; style trifid or bifid. — Plants 

 glabrous^ except as to the squamellae. 



KKY TO THE STECIES. 



Leaves represented only l)y the l)road leaf-lik(> Ijracts i< M. silvatica. 



Basal leaves picricnt, elongated, rauline except tlu- bracts none.. . 2. J/, pyrnoccphala. 



1, Mapania sylvatica Aublet, PL Guian. 1; 47. pi. 17. !775. 



Stem 30 to GO cm. Imig, leafless; bracts 3, as much as 14 cm. long, cm. wide; head 

 ovoid, 1 to 2 cm. long, f(»rruginous; styh* tridd. 



Distribution: Venezuela, Guiana, Panama {Jidnlay 9)4), Costa Rica. 

 Costa Ricax collection; Carrillo, Pittier 1187. 



2. MapaniapycnocephalaBcnth. Journ. Einn. Soc. 16; 512. pL 5, 6, 1887, by error 



pijcnostachya. 

 Hypolytrum pyrnocephahim Penth. Pot, Voy. Sulph. 177. 1844. 

 Stem 30 to GO cm. long; basal leaves 30 to 40 cnL long. 2 to 3 cm. broad, narrowed at 

 each end; bracts 3, resembling the leaves; head 1 to 2 cm. long, ovoid, ferruginons; 



fitvle bifid. 



Distribution: Panama (Island of Gorgona, (lioco Bay), Costa Pica. 

 Costa Rtcan collection: Carrillo, Pittier 1188. 



^Enum. 2: 272, 1837, 



o 



