210 NORTH AMERICAN FLORA [Volume 25 



Distribution : Long Island to Minnesota, southward to Florida and northern Mexico. 



Illustrations: Dill. Hort. Elth. pi. 122; Lam. Tab. Encyc. pi. SI; Nouv. Duham. 1: pi. 

 57; Millsp. Am. Med. PI. pi. 34; Sargent, Silva N. Am. pis. 33-34; Sargent, Man./. 483; Eritt. 

 & Brown, 111. Fl. /. 2271; Hough, Trees N. States/. 349,350; A. Gray, Gen. 111. pi. 157 ; Gaertn. 

 Fruct. pi. 49; Mem. Mus. Paris 12 : pi. 26, f. 42 ; Catesby, Nat. Hist. "Car. 2 : pi. S3 ; Schnizl. lc. 

 pi. 250, f. 15-26 ; Baillon, Hist. PI. 4 : 395, /. 445, 446 ; Cyel. Am. Hort. / 2010 ; E. & P. Nat. Pfl. 

 3 4 : /. 100, A-G; Britton, N. Am. Trees /. 529. 



3. Ptelea Baldwinii T. & G. Fl. N. Am. 1 : 215. 1838. 



Plelea angustifolia Benth. PI. Hartw. 9. 1839. 



Ptelea parvi folia A. Gray ; Hemsl. Biol. Centr. Am. Bot. 1 : 170, in part. 1879. 



Ptelea crenulata Greene, Pittonia 1 : 216. 1888. 



Ptelea trifoliala angustifolia Jones, Proc. Calif. Acad. II. 5 : 629. 1895. 



Plelea Baldninti parvifolia A. Gray, Syn. Fl. N. Am. V-: 373. 1897. 



Ptelea Baldwinii crenulata Jepson.'Fl.'W. Middle Calif. 249. 1901. 



Plelea coahuilensis , P. obtusata, P. pnmila Greene, Contr. U. S. Nat. Herb. 10 : 61. 1906. 



Plelea scutellata, P. cuspidata, P. undulata, P. cognala Greene, Contr. TJ. S. Nat. Herb. 10: 62. 



1906. 

 Plelea crenata, P. jucunda Greene, Contr. U. S. Nat. Herb. 10: 63. 1906. 

 Ptelea glauea, P. belulifolia Greene, Contr. U. S. Nat. Herb. 10 : 64. 1906. 

 Ptelea attrila, P. similis Greene, Contr. U. S. Nat. Herb. 10: 65. 1906. 

 Plelea aboriginum, P. lucida Greene, Contr. U. S. Nat. Herb. 10: 66. 1906. 

 Ptelea persicifolia Greene, Contr. U. S. Nat. Herb. 10 : 67. 1906. 

 Ptelea neo-mexicana Greene, P. aculifolia Greene & Rose ; Greene, Contr. U. S. Nat. Herb. 10 : 6S. 



1906. 

 Plelea laelissima Greene & Rose, P. a mbigens Greene, Contr. U. S. Nat. Herb. 10: 69. 1906. 

 Plelea nitens, P pallida, P. straminea Greene, Contr. U. S. Nat. Herb. 10: 70. 1906. 

 Ptelea nituia, P. argenlea, P. neglecta, P. trip/era Greene, Contr. U. S. Nat. Herb. 10: 71. 1906. 

 Plelea lutescens, P. elegans, P. eon finis Greene, Contr. U. S. Nat. Herb. 10 : 72. 1906. 

 Ptelea saligna, P. brei'is/ylis, P. ovalifolia Contr. U. S. Nat. Herb. 10: 73. 1906. 

 Ptelea cinnamomea Greene, Contr. U. S. Nat. Herb. 10 : 74. 1906. 

 Ptelea bullata, P. cycloloma Greene, Contr. D. S. Nat. Herb. 10: 75. 1906. 



A shrub or a small tree 3-8 m. tall, the young twigs often glandular and usually totnen- 

 tulose, glabrate in age ; leaflets 3 or occasionally 5, the lateral ones sessile or subsessile, 

 and more or less inequilateral, narrowly-lanceolate to oval or obovate, 1.5-6 cm. long, 0.7-2.8 

 cm. broad, acute to somewhat acuminate or rounded at the apex, cuneate to obliquely 

 rounded at the base, the terminal leaflet sessile to short-petioluled, usually equilateral or 

 nearly so, narrowly to broadly obovate, sometimes elliptic or oblanceolate, 2.5-7 cm. long ; 

 all crenulate, doubly-crenulate or entire, pellucid-glandular and more or less pubescent with 

 scattered hairs beneath ; branches of the inflorescence and the pedicels often finely pubes- 

 cent ; staminate flowers 0.8-1.3 cm. broad, the sepals oblong to broadly ovate, 1-2.5 mm. long, 

 finely pubescent ; petals oblong to elliptic, ovate or somewhat obovate, 4-6.8 mm. long, 

 finely pubescent, usually rounded at the apex ; filaments commonly hirsutulous to the 

 middle or a little above, the anthers oblong-ovate to ovate ; pistillate flowers with an 

 oblong-ovate or broadly ovate, compressed, sessile ovary ; mature samaras 1-2 cm. long, 

 0.9-2 cm. broad, with mostly thin, oblong to nearly orbicular or somewhat obovate wings, 

 refuse at both ends or rounded or subulate-tipped by the prolongation of the wing along 

 the style, the body oblong to nearly orbicular or somewhat obovate, usually strongly 

 reticulate. 



Type locality : St. Johns, East Florida. 



Distribution : Eastern Florida ; Texas to Colorado, California, and southward into Mexico. 



Illustration : Britton, N. A m - Trees/ 530. 



Doubtful and excluded species 



Ptelea monophylla Lam. Tab. Encyc. 1: 336 (1791), is Cliftonia monophylla (Lam.) 

 Britton. 



Ptelea viscosa L. Sp. PI. 118 (1753), is Dodonaca viscosa L. 



The specimen reported as Ptelea pentandra from Yucatan, by Millspaugh (Field 

 Columb. Mus. Publ. Bot. 1 : 25) appears to be Forchhammeria trifoliata Radlk. The 

 specimen reported from Mexico by Bentham (PI. Hartw. 14) is said to be sterile Rhus 

 Toxicodendron. 



16. TARAVALIA Greene, Leaflets 1 : 222. 1906. 



An unarmed shrub. Leaves alternate. Leaflets 3, glandular-punctate. Flowers soli- 

 tary, or few and subumbellate or corymbose. Sepals 4 or 5. Petals 4 or 5. Stamens 4 or 

 5, hypogynous. Filaments subulate, glabrous. Ovary 2-celled (rarely 3-celled). Fruit a 



