Urvillea. SAPINDACEiE. 441 



3-foliolate, covered, especiall}^ beneath, with a more or less pronounced and persistent tomeu- 

 tum ; leaflets more coarsely toothed : fruit also tomentulose. — Bull. Soc. Bot. Belg. 

 xxix. 43 (as subsp.) ; Sargent, Gard. & For. iv. 148. A. Californicum, Dietr. Syn. ii. 1283. 

 Negundo Californicum, Torr. & Gray, Fl. i. 250, 684; Hook. & Arn. Bot. Beech. 327, t. 77; 

 Nutt. Sylv. ii. 90, t. 72. N. aceroides, Torr. Pacif. K. Rep. iv. 74, &c., not Mcench. N. 

 aceroides, var. Californicum, Sargent, 1. c. ii. 364. — River banks, &c., Central California, 

 together with but much more common than a smoothish 3-foliolate form indistinguishable 

 from the type. 



A. sekrAtum, Pax (in Engl. Jahrb. vi. 296 et seg. ; Negundo Mexicanum, DC. Prodr. i. 596 ; 

 A. Mexicanum, Pax, 1. c. vii. 212, not Gray), is a nearly related species of S. Mexico and Centr. 

 America, characterized by an even sharp serration of its caudate-acuminate leaflets. After ap- 

 plying the name A. Mexicanum to this species, notwithstanding the earlier use by Dr. Gray of 

 the same combination for a species of Acer proper, Professor Pax appears to have confused 

 . the two, as he refers (in Engl. & Prantl, Nat. Pflanzenf. iii. Ab. 5, 271 ) to an " A. Mexicanum 

 (DC.) Gray." 



3. D0D0N--2&A, L., not Plum. {Remhert Dodoens, Flemish botanist, 

 1517 (?) to 1585, archiater at the German imjjerial court, and author of the 

 Cruydeboek.) — Shrubs and small trees with alternate oblanceolate to linear 

 entire or (in Madagascar and Australia) toothed or pinnate leaves, commonly 

 with glands emitting a viscous resinous or varnish-like exudation. Flowers dioe- 

 cious, apetalous, anomalous in the obsolete disk. — Gen. no. 855 ; Lam. 111. t. 304 ; 

 Cav. Ic. t. 327 ; DC. Prodr. i. G16 ; Gray, Gen. 111. ii. 217, t. 182 ; Benth. Fl. 

 Austr. i. 472 ; Benth. & Hook. Gen. i. 410 ; Radlk. in Engl. & Prantl, Nat. 

 Pflanzenf. iii. Ab. 5, 356. Empleurosma^ Bartl. in Lehm. PI. Preiss. ii. 228. — 

 A difficult and chiefly Australian genus, of which a single highly polymorphous 

 and widely distributed species attains our southern borders. 



D. viscosa, Jacq. Glabrous viscid shrub, 4 to 12 feet high : branclilets covered with red- 

 dish shredded bark : leaves very variable in breadth, entire, finely pinnately veined, cuneate 

 to short petioles, resinous-dotted on both surfaces, scarcely paler beneath : flowers small, 

 greenish, at length slender-pedicelled in short axillary or terminal racemes : capsules 6 to 

 10 lines broad, nearly as long, broadly 3-winged, notched at the apex and more or less cor- 

 date at the base : seeds dark-colored, only one maturing in each cell. — Enum. PI. Carib. 

 19 ; L. Mant. ii. 228 ; DC. 1. c. ; Gray, 1. c. D. Burmanniana, DC. 1. c. D. Schiediana, 

 Schlecht, LinniBa, xviii. 49 ; Torr. Bot. Mex. Bound. 48. — Very widely distributed in 

 warm countries and in the Southern Hemisphere, varial)le but with ill-defined forms. The 

 commoner more typical form (var. vitlgAris, Benth. 1. c.) with leaves lanceolate, acute or 

 acutish, and capsule mostly large with deep narrow notch at the summit, is common in 

 Mexico and approaches the Lower Rio Grande, Berlandier, no. 2359. Within our limits are 

 the following foliar varieties. 



Var. spathulata, Benth. 1. c. 476. Leaves oblong-spatulate, relatively broad, very 

 obtuse, rounded, or often retuse and mucronulate at the apex : capsule of the type. — 

 D. spathulata. Smith in Rees, Cycl. xii. — Sandy soil, Florida, on the Indian River, &c., 

 Garher, Cnrtlsx, Hnssler. (W. Ind., Australia.) D. nana, Shuttl. ined., is a small-leaved 

 form of this, Florida, coll. Rugel. 



Var. angustifolia, Benth. 1. c. Leaves linear or nearly so, acutish, somewhat 

 thicker and paler than in the other varieties : capsules mostly smaller and with shallower 

 more open sinus at the summit. — D. angustifolia, L. f. Suppl. 218. — Sandy soil, near 

 streams, Arizona, in Santa Catalina Mts., Pringle; Ft. Lowell, Levimon ; Mescal Mts., 

 Jones ; fl. February to September ; fr. adhering nearly throughout the year. (Sonora, 

 Tkurber, Hartman ; Chihuahua, Palmer; and widely distrilnited with the broader-leaved 

 forms.) 



4. URVlLLEA, HBK. {Rear AdmimlJ. S. C. Dumont d' UrvUle, born 

 1790, commander of a French antarctic exploring expedition, 1837-1840.) — 



