502 



CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



PARVIGLUMIA. 



Fruit glabrous G6. P. parviglume. 



Fruit with scattered appressed silky hairs. 



Culms creeping, with ascending flowering branches, not over 



0.5 meter high; blades falcate 64. P. schraitzii. 



Culms clambering, usually 1 to 3 meters long; blades not 

 falcate. 

 Panicles 2.5 to 7 cm. long; blades not over 1 cm. wide, 



symmetrical at base 63. P. virgultorum. 



Panicles 10 to 15 cm. long; blades 1.2 to 2.5 cm. wide, 



unsymmetrical at base .^ 65. P. scMffneri. 



^d^'t^"^ 63. .Pamcum ^^^i^^^^^^E^k^'''^ ^^^^ '^^S^ 



Panicum virgultorum Hack. Oesterr. Bot. Zeitschr. 51: 369. 1901; Contr. U. S. Nat. 

 Herb. 15: 125. 1910. 



DISTRIBUTION. 



Hedge rows, brushy banks, and cultivated fields, southern Mexico to Panama. The 

 type specimen from Costa Rica. 



Veracruz: Jalapa, Hitchcock 6630. 

 Cordoba, Hitchcoclz 6441. Ori- 

 zaba, Amer. Gr. Nat. Herb. 

 64. 

 Guatemala: Guatemala City, Hitch- 

 coch 9074. Chacula, 5eZer 2708. 

 Coban, Turclcheim 3788. 

 Costa Rica: San Jose, Hitchcoch 

 8490. Alajuelita, Tonduz 8818, 

 8829. Tres Rios, Pittier & 

 Tonduz 4326. San Francisco, Rio Torres, Jimenez 49. San Juan, Ji-minez 

 919. 

 Panama: El Boquete, Hitchcoch 8317. ^^ y, 



Fig. 85. — Distribution of P. virgultorum. 



64. Panicum schmitzii Hack. 



t£„^Z..^^t,,'-t*^^[6ify 



Panicum schmitzii Hack. Ann. Naturhist. Hofm. Wien 17: 254. 1902; Contr. U. S. 

 Nat. Herb. 16: 125. 1910. 



DISTRIBUTION. 



Shaded rocky slopes, central and 

 southern Mexico. The type specimen 

 from Mexico. 



San Luis Potosi: Las Canoas, 



Pringle 3817. 

 Veracruz: C6rdoba, Hitchcoch 



6423, 6446. Orizaba, Amer. 



Gr. Nat. Herb. 65. Fig. 86.— Distribution of P. scftmJte'L 



65. Panicum schiffneri Hack. 



Panicum schiffneri Hack. Ergeb. Bot. Exped. Akad. Wiss. Siidbraa. 11. 1906; Denk- 

 schr. Kais. Akad. Wiss. Wien 79: 72. 190^. The type specimen, in Hackel's herbar- 

 ium, was collected in southern Brazil by Wettstein and Schiffner in 1901. 



