STANDLEY TREES AND SHRUBS OF MEXICO. 465 



106. Parosela decora (Schauer) Rydb. N. Amer. Fl. 24: 90. 1920. 



Dalea decora Schauer, Linuaea 20: 743. 1847. 



Oaxaca. 



Shrub, 0.3 to 1 meter high, with tomentose branches; leaflets 3 to 7, oblong 

 or obovate, 2 to 5 mm. long, obtuse or retuse, villous-tomentose ; spikes dense, 

 headlike, 1 to 1.5 cm. long ; calyx villous ; banner white or ochroleucous, the 

 other petals purple; fruit pubescent. 



For a list of doubtful species of the genus see Rydberg, N. Amer. Fl. 24: 116. 

 1920. 



14. HABPALYCE DC. Prodr. 2: 523. 1825. 



Shrubs or small trees; leaves odd-pinnate, the leaflets rather large, with 

 numerous yellowish or reddish glands on the lower surface; flowers large, race- 

 mose ; fruit short and broad, bivalvate. 



The writer is skeptical concerning the validity of the species listed below. 



They are separated usually by characters which would be considered of little 



value in other genera of the family and are represented by very few specimens. 



The name " balche-ceh " is said by Seler to be applied to some species of the 



genus in Yucatfin. 



Leaflets glabrous on the upper surface, even when young 1. H. goldmani. 



Leaflets sericeous or puberulent on the upper surface, at least when young. 

 Venation of the lower surface of the leaflets prominent and reticulate. 

 Leaflets acutish or obtuse ; valves of the fruit very thick and hard. 



2. H. mexicana. 

 Leaflets rounded and shallowy retuse at apex; valves of the fruit thin. 



3. H. pringlei. 

 Venation of the leaflets neither prominent nor reticulate. 

 Leaflets o^'al or rounded-oval, finally glabrate beneath, retuse at apex. 



4. H. arborescens. 

 Leaflets oblong, copiously sericeous beneath, scarcely or not at all retuse at 

 apex. 



Leaflets 7 or 9 5. H. loeseneriana. 



Leaflets 13 to 23 6. H. macrobotrya. 



1. Harpalyce goldmani Ro.se, Contr. U. S. Nat. Herb. 8: 313. 1905. 

 Known only from the type locality, Canjob, Chiapas. 



Leaflets 17 to 21, oblong or oblong-ovate, obtuse; racemes mostly longer than 

 the leaves, the flowers large. 



2. Harpalyce mexicana Ro.se, Contr. U. S. Nat. Herb. 8: 42. 1903. 

 Known only from the type locality, near Bolanos, Jalisco. 



Small tree; leaflets 11 or 13, 4 to 7.5 cm. long; fruit 5.5 cm. long, 2.5 cm. 

 wide, glabi'ous ; seeds 10 to 14 mm. long, brown, lustrous. 



3. Harpalyce pringlei Rose, Contr. U. S. Nat. Herb. 8: 42. 1903. 

 Known only from the vicinity of the type locality, Cuernavaca. Morelos. 

 Shrub, 0.3 to 1.8 meters high; leaflets about 11, 1.8 to 4 cm. long; fruit about 



8 cm. long and 2.5 cm. wide. 



4. Harpalyce arborescens A. Gray, Proc. Amer. Acad. 5: 178. 1862. 

 Brongniartia retusa Benth. ; Henisl. Diag. PI. Mex. 8. 1878. 

 Brovgniartia hidalgensis Taub. Bull. Herb. Boiss. 3: 613. 1895. 

 Harpalyce retusa Rose, Contr. U. S. Nat. Herb. 8: 43. 1903. 



San Luis Potosi, Veracruz, and Hidalgo ; type collected near Tantoyuca, 

 Veracruz. 



Shrub or small tree ; leaflets 7 to 11, 2 to 5 cm. long. 



