STANDLEY TREES AND SHRUBS OF MEXICO. 1017 



Petals all large and of equal length, the ventral ones nar- 

 rower than the dorsal. 

 Dorsal petals rounded-obovate ; ovules about 15; leaves 



.• opposite 39. P. intermedia^ 



Dorsal petals narrowly obovate; ovules 5; leaves ternate 



or scattered 40. P. retroscabra. 



Petals none or minute and subulate. 



Spur of the calyx very short, not compressed at base. 



41. P. watsoniana. 

 Spur orbicular, compressed at base. 

 Inflorescence distinctly racemose, the flowers fasciculate. 

 Axis of the inflorescence pubescent and often sparsely 



hispidulous ; petals 6 42. P. subuligera. 



Axis of the inflorescence densely glandular-hirtellous ; 



petals none 43. P. caeciliae. 



Inflorescence leafy, the flowers solitary in the axils. 



Plant glabrous 44. P. ignea. 



Plant hirtellous or hispidulous 45. P. liebmannii. 



1. Parsonsia racemosa (L. f. ) Standi. 

 Lythrum racemosum L. f. Suppl. PI. 250. 1781. 

 Cuphea spicata Cav. Icon. PI. 4: 56. pi. 3S1. 1797. 

 Cuphea racemosa Spreng. Syst. Veg. 2: 455. 1825. 

 Veracruz and Oaxaca. West Indies and South America. 



Plants herbaceous or suffrutescent, viscid, hirsute; leaves ovate or ovate- 

 elliptic, 2 to 5 cm. long, acute or obtuse; flowers in naked racemes, the pedi- 

 cels 3 to 6 mm. long; calj'x 5.5 to 10 mm. long, short-hirtellous ; petals pink, 

 about half as long as the calyx. " Hierba del f raile " (Colombia). 



2. Parsonsia gaumeri (Koehne) Standi. 



Cuphea gaumeri Koehne, Bot. Jahrb. Engler 29: 154. 1900. 



Yucatan ; type from Buena Vista Xbac. 



Stems herbaceous or suffrutescent, glandular-pubescent ; leaves subsessile, 

 oblong to elliptic, 1 to 2 cm. long, obtuse or acute, obscurely cillolate ; flowers 

 chiefly axillary, the pedicels 3 to 5 mm. long ; calyx 6.5 mm. long, hirtellous on 

 the nerves. 



Reported by Millspaugh' as Cuphea trinitatis DC. 



3. Parsonsia ciliata (Swartz) Standi. 



Lythrxim ciUatum Swartz, Prodr. Veg. Ind. Occ. 76. 1788. 



Cuphea dccandra Ait. Hort. Kew. ed. 2. 3: 151. 1811. 



Cuphea ciliata Koehne, Bot. Jahrb. Engler 1: 454. 1881. 



Cuphea purpusii T. S. Brandeg. Univ. 'Calif. Publ. Bot. 4: 378. 1913. 



Veracruz. Cuba, Haiti, and Colombia. 



Slender shrub, much branched ; petioles 1 to 3 mm. long ; leaves oblong, 

 )bovate, or ovate, 1.5 to 5 cm. long, cuneate or attenuate at base, acute or 

 obtuse at apex, glandular-ciliate ; flowers racemose, the pedicels 2 to 5 mm. 

 long ; calyx green, 7 to 11 mm. long, glandular-hirtellous ; petals purple, the 

 ventral ones 4 to 5.5 mm. long. 



4. Parsonsia utriculosa (Koehne) Standi. 



Cuphea utriculosa Koehne in Mart. Fl. Bras. 13^: 452. 1877. 

 Tepic to Chiapas and Tabasco. Central America. 



Slender shrub, the stems glandular-hirtellous or glabrate ; leaves sessile 

 or subsessile, 1 to 3.5 cm. long, oblong-lanceolate to linear, glabrous but often 



Vield Mus. Bot. 1: 311. 1896. 



