1230 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Leaves glabrate or thinly scabrous beneath, or hirtellous alou^ the 

 nerves; calyx often more than half as long as the corolla tube. 

 Calyx lobes more than half as long as the corolla tube. 



13. T. densiflora. 

 Calyx lobes less than half as long as the corolla tube. 

 Calyx lobes obtuse or acute; leaves usually glabrous. 



14. T. bicolor. 

 Calyx lobes acuminate ; leaves hirtellous beneath upon the nerves. 



15. T. petiolaris. 



1. Tournefortia umbellata H. B. K. Nov. Gen. & Sp. 3: 79. pi. 202. 1819. 

 Yucatan and Campeche ; tjT)e collected near Campeche. 



Low shrub, nearly glabrous; leaves short-petiolate, lanceolate or lance-ob- 

 long, 6 to 10 cm. long, acuminate, attenuate at base, glabrous ; spikes several, 

 elongate; corolla 3 to 4 mm. long, glabrous or scaberulous. 



2. Tournefortia glabra L. Sp. PI. 141. 1753. 

 Tournefortia cymosa L. Sp. PI. ed. 2. 202. 1762. 



Tep'c to Oaxaca and Veracruz. West Indies and Central America. 



Large shrub or small tree; leaves petiolate, lanceolate to elliptic, 6 to 10 

 cm. long, acuminate at base and apex, glabrous or sparsely sericeous when 

 young; spikes usually numerous, slender, elongate; corolla whitish, the tube 

 about 4 mm. long ; fruit white, 5 mm. or less in diameter. " Limoncillo " 

 (Veracruz). 



In Oaxaca the leaves are applied as poultices to the feet as a remedy for 

 influenza. A decoction of the plant is said to be employed in Veracruz, 

 externally, as a remedy for rheumatism. 



3. Tournefortia peruviana Poir. in Lam. Encycl. Suppl. 4: 425. 1816. 

 San Luis PotosI and Veracruz. West Indies and South America. 



Shrub, nearly glaln-ous ; leaves ovate or ovale-oblong, to 11 cm. long, acumi- 

 nate, rounded or obtuse at base, smooth ; spikes usually numerous, slender, 

 lax; corolla tube 5 to 6 mm. long; fruit yellowish, 6 mm. or less in diameter. 



Some of the Jlexican specimens have been determined incorrectly as T. 

 laurifolia Vent. 



4. Tournefortia potosina Standi., sp. nov. 



San Luis PotosI; type from Tamasopo Canyon, altitude 750 meters (Pringle 

 3518; U. S. Nat. Herb. no. 316801). 



Shrub, 2 to 3 meters high, the young branches strigose; leaves petiolate, 

 lanceolate to oblong-ovate, 4 to 13 cm. long, acute to long-acuminate, obtuse 

 or rounded at base, strigose-scabrous or glabrate above, densely strigose- 

 scabrous beneath when young; cymes usually miich branched, the spikes 

 slender and lax, the flowers pedicellate ; calyx lobes strigose, subulate, about 

 half as long as the corolla tube ; corolla strigose, the tube 2 to 3 mm. long, 

 the lobes filiform-subulate, fully as long ; fruit ovoid-globose, densely sericeous, 

 terete. 



Purpus 5377 and 5378 from Minas de San Rafael represent the same species. 



5. Tournefortia volubilis L. Sp. PI. 140. 1753. 



Tournefortia velutina H. B. K. Nov. Gen. & Sp. 3: 79. pL 201. 1819. 

 Tournefortia floribunda H. B. K. Nov. Gen. & Sp. 3: 79. 1819. 

 Alesserschmidia Candida Mart. & Gal. Bull. Acad. Brux. ll^: 334. 1844. 

 Tournefortia Candida Walp. Report. Bot. 6: 556. 1846-47. 

 Baja California and Sinaloa to Tamaulipas, Veracruz, Yucatan, and Oaxaca. 

 Southern Florida ; West Indies ; Central and South America. 



