248 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



mm longis glabris; hypanthio in anthesi obconico 0.5 mm alto; seminibus im- 

 maturis rubro-brunneis suborbiculari-ovalibus 0.5 mm longis scrobiculatis. 



BRAZIL. Minas Geraes : Diamantina ; Olaria ; seepage on grass-covered slope ; 

 occasional; alt. 1245 m; herb with bright yellow flowers; 14 May 1931, Ynes 

 Mexia 5837 (holotype NY) . 



This species is distinguished by the combination of monocephalous stems, 

 which are short and simple, crowded opposite pairs of leaves, calyx equaling the 

 corolla or nearly so, the corolla-tube mostly glabrous within, and the elongate 

 triangular-ovate, acuminate corolla-lobes. The specimen of Lasser 1892 (NY) 

 approaches this species in habit only. Standley noted on the label of the holotype : 

 "Quite a remarkable plant in a genus in which one would scarcely expect a 

 new species." 



5. Perama hirsuta Aubl. PL Guian. 1: 54. pi. 18. 1775; Poir. in Lam. Encycl. 

 Suppl. 4 : 353. pi. 68. 1816, and 5 : 168. 1804. 



Perama setulosa Miq. Linnaea 18: 617. 1844. 



Perama ericoides Poepp. & Endl. Nov. Gen. & Sp. 3 : 29-30. 1845. 



Mattuschlcea hirsuta (Aubl.) Vahl, Symb. 3: 11. 1794. 



Mattuschlcea incana Spreng. Syst. Veg. 1: 428. 1825; Sclralt. Mant. 3: 48. 1827. 



Key to the Varieties of Perama hirsuta 



Hairs on lower portion of stem generally loosely spreading, rarely absent; lower and 

 middle cauline leaves ovate to ovate-lanceolate, mainly rounded at base, mainly 

 2.5-4.5 mm wide, usually spreading to ascending; stems commonly branched, bearing 

 few, several, or many heads of flowers. 5a. P. hirsuta var. hirsuta. 



Hairs on lower portion of stem appressed or erect-ascending; lower and middle cauline 

 leaves lanceolate, obtuse at base, mainly 0.5-2 mm wide, usually ascending to erect; 

 stems often simple and monocephalous or sparingly branched with few inflorescences. 



5b. P. hirsuta var. stricta. 



5a. Perama hirsuta var. hirsuta. Fig. 81, F-J. 



Perama hirsuta Aubl. PI. Guian. 1: 54. pi. 18. 1775; Poir. in Lam. Encycl. Suppl. 4: 353. 



pi. 68. 1816; 5: 168. 1804. 

 Perama setulosa Miq. Linnaea 18: 617. 1844. 

 Perama ericoides Poepp. & Endl. Nov. Gen. & Sp. 3 : 29-30. 1845. 

 Mattuschlcea hirsuta (Aubl.) Vahl, Symb. 3: 11. 1794. 



Mattuschlcea incana Spreng. Syst. Veg. 1: 428. 1825; Schult. Mant. 3: 48. 1827. 



Distribution. Widely distributed in rocky, especially sandstone, dry or moist 

 savannas* of ten in wet savannas bordering morichales (Mauritia), sandy flats, 

 and along railroads, islands of Trinidad and Martinique, eastern and southern 

 Venezuela, British Guiana, Surinam, and eastern Brazil south to the states of 

 Bahia and Goyaz, at elevations from near sea level ascending to 1250 m on Cerro 

 Moriche in southern Venezuela, and to 1200 m in the Kaieteur Plateau of British 

 Guiana and the summit of Tafelberg, Surinam. 



TRINIDAD : Aripo Savanna, 14 Apr 1921, N. L. & E. G. Britton 2911 (NY) ; 

 Piarco Savanna, 27 Feb 1920, N. L. & E. G. Britton & T. E. Hazen 74 (NY) ; 

 Aripa Savanna, 3 Jul 1962, Steyermark 90914 (VEN) ; without locality, 1877-80, 

 Fendler 991 (NY). MARTINIQUE. Savane seche de Vieux-Fort, ilede Ste. Lucie, 

 1886, Pere Duss 1450 (NY). SURINAM. Berlyn, Wullschlagel 818 (NY); 

 Zanderij I, Oct 1909, J. Boldingh 3906 (NY) ; white sand, 21 Mar 1951, J. & P. A. 

 Florschiitz 1882; savanna, km 116.5, 23 Apr 1949, J. Lanjouw & J. C. Lindeman 

 3058 (NY) ; Zandery, 31 May 1916, J. A. Samuels 246 (NY) ; without locality, 



