
412 BOTANICAL GAZETTE ' [NOVEMBER 
the tepary (P. acutifolius A. Gray), and suggest that this variety 
be called P. acutifolius var. latifolius. The description is as follows: 
PHASEOLUS ACUTIFOLIUS A. Gray var. latifolius, var. nov.—Tepary. 
Annual: stems recumbent, spreading or twining, o. 5-3 m. long, glabrous 
to puberulent: leaves smooth above, with prominent veins beneath, glabrous 
throughout or slightly puberulent beneath; stipules lanceolate, 2 mm. long, 
1 mm. broad, striate, appressed; petioles slender, 2-10 cm. long (av. 6.8 cm.); 
leaflets stipellate; terminal leaflet stalked, large, 4-9. 5 cm. long (av. 6.4.cm.), 
2.2-5.2cm. wide (av. 3.7 cm.), average ratio length to width 1.74, ovate to 
broadly lanceolate, gradually narrowed and acute at apex; petiolule of terminal 
leaflets 1.6-3.4 cm. long (av. 2.2 cm.); lateral leaflets same general shape as 
terminal leaflet but slightly smaller and inequilateral, 3.8-7.8cm. long 
(av. 5.6cm.), 2-5cm. broad (av. 3-3cm.): inflorescence axillary; bracts 
and bractlets small, deciduous: flowers medium sized, pedicellate, white or 
pale violet: calyx short, 3-4 mm. long, broadly campanulate, 4-toothed (upper 
two lobes uniting into one), teeth acuminate, pubescence on teeth and calyx 
scattered and fragile: banner broad, emarginate, in flower more than half 
reflexed, biauriculate at base, 8-10 mm. long; wings exceeding banner, obovate 
to spatulate, 10-15 mm. long, auriculate on one side; keel narrow, two or 
three turns to the spiral: stamens in two sets (9 and 1): legume 2-7-seeded 
(average 4.9), 5-9 cm. long (av. 7.3 cm.), 8-13 mm. wide (av. 10.5 mm.), 
ciliate when young, puberulent, slightly pubescent, or smooth when mature, 
straight or slightly curved: seeds of different varieties white, yellow, brown 
or bluish black to deep violet, either self-colored or variously flecked (no red- 
seeded varieties have yet been observed), round oval to nearly round (as the 
navy bean) to strongly flattened (like a diminutive lima).—Fig. 10. 
The following table gives the averages of size and shape of the 
seeds as determined by measurement of at least 25 normal speci- 
mens of each of 48 different strains. 






TABLE V 
2 se 
Length Width | Thickness | Ratio = | Ratio 7 
mm. mm. mm. Ww. 
es aoe 
Maximum varietal average ...| 9.78 6.68 4.76 1.80 2. 
Minimum varietal average. . . 6.93 3.88 2.66 1.33 oe 
Average for all varieties... . . 8.56 5.68 3.80 1-49 +3 
eae 2 Te ete Se Se ee 

Coutter® gives as the habitat of P. acufifolius “mountar 
valleys west of the Pecos, and in ad jacent New Mexico and Mexico. 

* Courter, J. M., Botany of western Texas. Contrib. Nat. Herb. 2:89. 1804: 
