THE GEXUS ilAXETTIA ' 29 



West In"dies. Jamaica; P. Browne \' Wright \ 3£asso?i\ SJiaJce- 

 spearel xlo7\ J^am. SSO I Dancer I March 814! Moist woods, New 

 Haven Grap. 5500 ft., Nicholls Qo ! vSummit of Blue Mt., Fur die ! 

 Portland Grap, Blue Mt., Alexanderl Hayti : SchomlurgJcl 



This species has a double interest as being the first known of the 

 genus, and also the basis of the identification of Manettia with 

 Lygistum and Petesia (P. Lygistum\ see historical introduction, 

 supra). According to Alexander the flowers are " deep blue." It 

 is essentially a West Indian species, and is distinguished from its 

 allies by the manifestly apiculate stipules, the nearly orbicular leaves, 

 and the narrow, rather elongated calyx-lobes, curling and more or less 

 setaceous at the tip. K. Schumann, in the Flora Brasiliensis, treats 

 several of these allied species as varieties of M. Lygisfum ; but theiv 

 characters seem well worthy of the specific rank to which Sprague 

 (Bull. Soc. Herb. Boiss. ii. v. (1905)) has assigned several of them; 

 among these the latter author has properly recalled Willdenow's 

 M. pi eta (JLT. alba., infra), a native of Guiana. 



36. M. ScHUMANXTAXA Sprague, in Bull. Herb. Boiss. ii. v. 

 834 (1905). M. Li/c/isfion Svv, ysly. glahrata K. Schum., in Mart. 

 Flor. Bras. vi. vi. 181 (1889). 



Venezuela. Tovar : Fendler 589 ! Moritz 1807 ! 

 Barely distinguishable from JSL. alba, except by the corolla, which 

 is over a centimetre in length. 



37. M. ALBA, nom. nov. IL picta Willd. Sp. PL i. 624 (1797) ; 

 Sprague, in Bull. Herb. Boiss. it. v. 834 (1905). J£ Lygistum var. 

 alba K. Schum., in Mart. Flor. Bras. Yi. vi. 180 (1889). Nacibea 

 alba Aubl. PL Guian. i. 95, t. 37. f. 2 (1775). Conotrichia alba 

 A. Rich., in Mem. Soc. Hist. Nat. Paris, v. t. 14. f. 1 (1829). 

 Lygistum album O. Kuntze, Rev. Gen. PL i. 287 (1891). 



Guiana. Auhlet ! Martin ! Karouany : 8agot 300 ! Macoui-ia 

 River: Jenman 2470! Mazaruni River: Jenman 5305! Appun 

 304 ! 669 ! Bartica : Jenman 4727 ! Hbb. Mus. Brit. & Kew. 



Discovered in Guiana nearly a century and a half ago by Aublet, 

 this species has not yet been recorded elsewhere — unlike the widely- 

 distributed M. coccinea, also the discovery of Aublet, the only other 

 native Guianan species (infra). Its most notable character is tlie 

 short, stout corolla, densely hairy in the mouth (see Richard's excellent 

 figures quoted). This connects the M. Lyr/istu ?fi -group with that 

 species-group characterized by a short infundibular corolla, by way of 

 M. barbata. 



38. M. elexilis Brandegee, PL Mex. Purp. 196 (1915). 

 Mexico. Chiapas: Cerro del Boqueron ; fl. June, Purpus 7218! 



Guatemala. Alta Yerapaz : Pansamala, 3800 ft. J. D. Smith 936 ! 

 EcUADOii. Chimborazo, 3000 ft. Spruce 6185 ! 



39. M. BARBATA Oerst., in Kjob. Vidensk. Medd. Natur. 47 

 (1852). M. stenophylla J. D. Smith, in Coult. Bot. Gaz. Ivi. 58 

 (1913). 



Costa Riga: Endres 240! Mt. x'Vguacate, about 2000 ft., 

 Oersted ! in herb. Kew. 



