558 CONTRIBUTIONS FEOM THE NATIONAL HERBARIUM. 



1. Guarea rovirosae C. DC. Aim. Cons. Jard. Geneve 10:145. 1907. 

 Known only from the type locality, near Atasta, Tabasco. 



Leaflets lance-elliptic, 11 cm. long, acuminate ; ovary sparsely pilosulous, 

 4-celled, the cells 1-ovulate ; petals 4, pilosulous, 6 mm. long ; style glabrous. 



2. Guarea chiapensis Blake, Proc. Biol. Soc. Washington 34: 116. 1921. 

 Known only from the type locality, Finca Irlanda, Chiapas. 



Leaflets 2 or 3 pairs, elliptic or obovate-elliptic, 10 to 16 cm. long, short-pointed, 

 sparsely strigillose on the veins beneath, not tufted in the axils; panicles 5 cm. 

 long; petals densely strigillose, 5.8 mm. long. 



3. Guarea chichon C. DC. Ann. Cons. Jard. Geneve 10:147. 1907. 

 Known only from the type locality, near Atasta, Tabasco. 



Leaflets oblong-elliptic, up to 23 cm. long, very short-attenuate; panicles 

 about equaling the leaves ; ovary and style densely hirsute. " Chich6n de 

 montaua." 



4. Guarea filiformis C. DC. in DC. Monogr. Phan. 1 : 566. 1878. 

 Guarea filiformis § pallida C. DC. in DC. Monogr. Phan. 1 : 566. 1878. 

 Guarea filiformis y cinerascens C. DC. in DC. Monogr. Phan. 1 : 567. 1878. 

 Morelos and Oaxaca. Nicaragua and Peru ; type from Peru. 



Leaflets 3 pairs, oblong-elliptic or ovate-elliptic, 13.5 cm. long, 5 cm. wide, 

 obtusely cuspidate, glabrous ; calyx teeth obtuse ; petals 4 mm. long. 



5. Guarea tuerckheimi C. DC. ; Donn. Smith, Bot. Gaz. 33 : 250. 1902. 

 Veracruz. Guatemala ; type from Cubilquitz. 



Leaflets 2 to 8 pairs, obovate-oblong or oval-oblong, the larger 15 cm. long, 

 short-acuminate with obtuse apex; panicles loose, broad, 9.5 to 25 cm. long; 

 petals sparsely sti'igillose above. 



6. Guarea polyantha Blake, Proc. Biol. Soc. Washington 34 : 117. 1921. 

 Known only from the type locality, Acapulco, Guerrero. 



Large shrub; leaflets 2 to 5 pairs, those of the larger leaves 12.5 to 19 cm. 

 long, 3 to 4.7 cm. wide, acuminate to an obtuse apex ; panicles much branched, 

 10 to 24 cm. long; petals nearly glabrous, 3.8 mm. long; flowers with odor of 

 honey. " Cedrillo." 



7. Guarea heterophylla Blake, Proc. Biol. Soc. Washington 34 : 116. 1921. 

 Known only from the type locality, Pinotepa, Oaxaca. 



Leaflets 1 to 5 pairs, those of the larger leaves 9 to 12.5 cm. long, 3.8 to 5 

 cm. wide, obscurely and obtusely short-pointed ; panicles remotely branched, 

 7.5 to 14 cm. long ; petals strigillose above, 4 mm. long. 



8. Guarea brachystachya DC. Prodr. 1 : 624. 1824. 

 Mexico (?). 



Leaflets ovate, subacuminate, 9 cm. long or less; panicles spiciform, about 

 6 cm. long ; calyx teeth 4, obtuse ; petals 4. 



9. Guarea obtusata Blake, Proc. Biol. Soc. Washington 33: 118. 1020. 

 Known only from the type locality, Cafetal Concordia, Cerro Espino, Oaxaca. 

 Leaflets 2 to 4 pairs, elliptic-oblong or obovate-oblong, 9 to 17 cm. long, 



broadly rounded at apex, barbate beneath in the axils ; panicles about 4 cm. 

 long ; flowers very fragrant ; petals 4 or 5, papillose-puberulous outside ; ovary 

 4-cened, the ovules solitary; fruit subglobose, 2.7 cm. long; seeds 1.5 cm. long. 



10. Guarea makrinii Blake, Contr. Gray Herb. n. ser. 53: 57. 1918. 



Known only from the type locality, Cafetal Concordia, Cerro Espino, Ojjxaca. 



Leaflets 2 or 3 pairs, oval or obovate-oval, the larger 9 to 10.5 cm. long, obtuse, 

 barbate in the axils beneath; panicles 2.5 to 3.5 cm. long; petals 4 mm. long. 

 "Ocotillo bianco." 



