22 THE GENUS MANETTIA 



12. M. angustifolia, sp. nov. 



Frutex scandens pr?egertiin in novitatibus minute incano-pubervilus, 

 caule g-racillimo striate. Folia pap3'racea anguste lanceolataacumina- 

 tissima, basi ssepius acuta, supra glabrata subtus priesertim in venis 

 jjerpaucis minute puberula, petiolo brevissimo validiusculo dense 

 minute pubescente ; stijndee minimse truncatjE. Flores inter majores 

 clavati angustissimi. Calycis lobi plani subfoliacei lanceolati acumi- 

 nati acuti glaberrimi. Gm'olla extus minute pubescens. Ovarmm 

 Iseve glaberrimum. Capsula glabra ellipsoidea apiee nee angustata. 



Paraguay. Basin of Kiver Alto Parana, Fiehrig 5734? ! 



The chief critical characters are — the very narrow leaves, 4 cm. X 

 8 mm. to 6*5 cm. x 1"9 cm. ; the pronounced calijx-lohe^,, 6 mm. long and 

 as much as 2"5 mm. wide ; and the pubescent, very narrowl}^ clavate 

 flowers. Even the leaves that serve as bracts are saliciform in this 

 species ; in 31. cordifolia and its other allies, such leaves are not only 

 smaller, but more or less orbicular, or at any rate relativelv broader 

 than the ordinarj^ leaves. Corolla-twhQ 3 to 3%3 cm. long, the deltoid 

 lobes 4 mm. long and 4 mm. Avide at the base ; the tube is barely 

 6 mm. wide at the mouth. 



13. M. QUINQUENERVIA Sprague, in Bull, Herb. Boiss. ii. v. 266 

 (1905). 



Brazil. Santa Catharina, Fritz Mueller 122 ! in herb. Kew. 



14. M. PEDUNCULATA K. Schum., in Mart. Flor. Bras. vi. vi. 173 

 (1889). M. Psendo-Diodia Cham. & Schl., in Linna?a, iv. 174 

 (1829). M. ciliata Cham. & Schh loc. cit. 176; K. Schum. 

 loc. cit. 174. Diodia pedunculata Spreng. Syst. Veg. i. 405 (1825) ; 

 Syn. Cham. & Schl. loc. cit. 174. 



Brazil. Rio de Janeiro : in hedges about the campos ; fl. July. 

 Eiedel 619 ! San Paulo : Weir \ 



Var. GLABRA, var. nov. 



Caule omnino glabro, /bZ//« necnon calycis laeiniis glaberrimis nee 

 ciliatis. 



Brazil. Rio de Janeiro : foot of the Gavia : fl. December, Miers 

 3310 ! 



Schumann follows Chamisso in distinguishing the glabrous form 

 as a separate species, M. pedunculata ; but the indumentum may be 

 used critically only with the greatest caution in, this genus ; as 

 witness the great variation in this regard, for example, in the case of 

 31. cordifolia and its allies {siipra^. Indeed, the ovary in the Kew 

 specimen of Riedel's plant is densely pubescent ; in the British 

 Museum specimen it is quite glabrous. 



15. M. Smithit Sprague, in Bull. Herb. Boiss. ii. v. 267 (1905). 

 Colombia. Santa Marta, Campo Alegre, 1500 ft., K. H. Smith 



1393 ! in hbb. Mus. Brit. & Kew. 



This species is very distinct, if only in the number (8) of the 

 calyx-lobes — a unique character within this affinity. The leaves, too, 

 are rough, being minutely scabrid, by reason of the short, tapering, 

 many-celled scale-hairs that cover the ujDper surface. Similar hairs 

 compose the indumentum of the corolla. 



