BLAKE: REVISION OF MAHOGANIES 287 



the first binominal name given to the mahogany. Catesby* 

 gives a fairly good plate showing the fruit and leaves of the 

 mahogany, with a figure of some withered flowers, and describes 

 its manner of growth in the Bahamas. 



About 1836 a second species, 5. humilis, was added to the genus 

 by Zuccarini,^ described from specimens collected in Tehuantepec, 

 Oaxaca, by Karwinski. For many years this species has re- 

 mained comparatively little known. Recently, however, Harms^ 

 has referred to 5. humilis a species grown in the Botanic Garden 

 at Victoria, Camerun, West Africa, from seeds collected by 

 Preuss near San JuHan, El Salvador, on June 9, 1900. Preuss,^ 

 in his book on Central and South America, mentions in several 

 places a mahogany which he calls Swietenia bijuga, a name never 

 used by any other author (except as cited by Harms from Preuss' 

 book), and not defined by Preuss. Under this name he refers; 

 not only to the species from El Salvador, discussed by Harms, 

 but also to a mahogany from Venezuela, which is presumably 

 the species recently described by Pittier^ as 5. candollei. Harms 

 describes the species grown in Camerun as having leaflets la 

 to 12 cm. long, 4 to 5 cm. wide, thus much larger than those of 

 Zuccarini's original 5. humilis, but he does not consider the plant 

 botanically distinct. Specimens from Chiapas, collected by 

 Seler (no. 192 1), from Guerrero, collected by Langlassc (no. 132), 

 and from Michoacan, collected by Endlich (no. 1335), are also 

 referred to 5. humilis by Harms. None of this material has been 

 examined by the present writer, but it is clear from Harms' 

 description of the Camerun material that it at least belongs to 

 the species described below as 5. cirrhata. 



A third species, Swietenia macrophylla, was described and 

 figured by King-' in 1886, on the basis of trees grown in the 

 Botanic Garden at Calcutta from seed supposed to be from 



''Nat. Hist. Carol. 2: 81. PI. 81. 1743. 



5 Abh. Akad. Muench. 2: 355. PI. 7. 1835-36. 



^ Rep. Sp. Nov. Fedde 12: 210-21 1. 1913. 



' Exped. Centr. u. Suedamer. 112, 432, 433, 440, 442. 1901. 



* Journ. Wash. Acad. Sci. 10: 32,. 1920. 



" Hook. Ic. 16: pi. 1550. 1886. 



