GREENE -PTELEA IN THE WE8T AND SOUTHWEST. 



5. Ptelea antonina, Bp. nov. 



Twigs of the season not perceptibly rugose or tuberculate, being h< >ary with a • 



hirtellous-tomentose indument, the older dark dull-brown, sn th and glal 



foliage at all Btages of a definitely blue-green shade, also villous-pubescenf beneath, 

 deeper in color and thinly pubescent above, the texture thinnish even in maturity ; 

 middle leaflet obovate to obovate-elliptic, ^ to 6 cm. long, acute at base, obtusely 

 cuspidate pointed at apex, faintly crenate or subent ire, the pair smaller by one-fourth 

 to one-third, obliquely and even broadly ovate rather than ovate, pointed like the 

 odd one, all Bessile: samaras >>\ tin- largest, even extremely large in proportion to 

 tin- foliage, 2.5 to 3cm. long, -. 1 cm. wide above tin- middle, broadly somewhat 

 obovate, obtuse at the broad apex, mucronulate by tin- short style, at base narrow, 

 retuse; body oval, of somewhat less than tin- width oi tin- wing, circum vallate, 

 closely and rather sharply transverse-rugose, only minutely and somewhat obscurely 

 though not sparingly glandular-punctate; style ami stipe long and subequal, but 

 neither prominent. 



.War San Antonio. Texas, the type specimens in the National Herbarium, colli 

 Jun«- 11. 1891, by .Mr. L. II. Dewey. In 1894 A. A. II.-ll.-r collected th.- sami 

 at San Antomo. but in flower and half-grown leaf only. He distributed it under the 

 same number, 1582, as that which accompanies his P. rhombifolia, though th.- two 

 Bpecies arc not so v.-ry closely related, th.- foliage <>i I', rhombifolia i>ein-_' not only 

 almost twice as large, hut ol almost subcoriaceous texture. 



6. Ptelea rhombifolia Heller, Hull. Ton. Club 26: 313. 1899, in small part only. 

 Twigs of the season light brown, minutely and densely pubescent, but th.- indu- 

 ment parted into interrupted lines as following the summit- of the pronounced 

 rugosities: leaves large, rather firm in maturity, of a deep green, above sparingly 

 clothe. 1 with short depressed hair-, beneath villous-tomentulose; odd leaflet broadly 

 obovate, rarely with some hint of the rhomboid m outline, 6 to 8.5 em. lom_r. 4 to 

 4.'-> wide above tin- middle, acute at base, briefly ami bluntly cuspidate at apex, lat- 

 eral- smaller by one-fourth or one-third, obliquely ovate, cuspidate: samaras very 

 large, suborbicular, 2.5 to 3.2 cm. long, the breadth but little 1.—. slightly subeor- 

 date at the broad base, the rounded or subtruncate apex rarely mucronately or 

 cuspK lately acuti-h; body Large, hut of less than tin- width oi the broad wing, round- 

 obovate, indistinctly circumvallate, closely but not prominently transvers* a - 

 faintly dotted; stipe longer than the style and both Ion-. 



Southwestern Texas, where it seem- to he common, especially about Ban Antonio. 

 It was gathered there m immature specimens by Heller in April. 1894; the fruit 

 wrongly characterized by him because not hall grown in his specimens, 1 

 material is in the National Herbarium from Dr. E. Palmer. 1879; Munson and 

 Hopkins, m-ar K.-nville. July. 1889; William R. Maxon, at Victoria, April 28, 

 1905. .Mr. Heller's distribution number, 1582, covers this, and also the very dif- 

 ferent /'. "utunma. above described as new.' 



7. Ptelea formosa, Bp. nov. 



shruh perhaps I a rue. twigs of the season large, copiously leafy with large foliage, 

 the bark reddish-brown, seeming glabrous but under a lens minutely hirtellous- 

 puberulent, only minutely and obscurely rugulose and glandular, the older glal 

 smooth, cinereous-gray: leaves large, thin, pale <.n both faces, above glabrous except 

 on the veins, beneath very glaucous and with scattered villous hair- not only on the 

 veins hut elsewhere; leaflets subequal, the terminal one as often smaller as larger 

 than the other two. obovate to oval, 'i t" s ,-,,,. long, only abruptly narrow, d a1 

 all abruptly and cuspidately acute, the margins more or less distinctly subserrate- 

 toothed: samaras not large tor the foliage, the largest 2 cm. Long, little more than 

 ;;•_>!»,;,; 0(3 3 



