Delavaya, Ungnadia. 1477 



Amer. boreali-orientalis illustr. II. (1849) 209 1. 178, 179; Schnizlein, Iconogr. IV. 

 (1843-1870) t. 230 bis, f. 2 et 8 (reddit. ex anticed.); Fenzlin Fl. des Serres X. (1854- 

 1855) 217 n. 1059 c. tab. (sine n.); Benth. et Hook. f. Gen. PL I. 1. (1862) 398 n. 22; 

 Koch, Dendrolog. I. (1869) 515; Walp. Ann. VII. 4. (1869) 625; Baill. Hist. PI. V. 

 (1874) 423; Radlk. in Sitzungsber. bayer. Akad. XX. (1890) 280, 296 et in Engl. u. 

 Prantl, Nat. Pflanzenfam. III. 5. (1895) 365; Goulter, Manual of the Phanerog. West. 

 Texas in Gontrib. U. S. Nat. Herb. II. 1. (1891) 66; Sargent, Silva of North America 

 II. (1895) 63 t. 73 et Manual (1905) 655 f. 535; Robinson in A. Gray, Synopt. Fl. North 

 Am. I. 1. Fase. 2. (1897) 445. — Aesculus sp. Lindheimer t. Scheele in Linnaea XXI. 

 (1848) 590. 



Flores polygami, symmetrici. Galyx profunde 5-partitus, lobis ovato-lanceolatis 

 parum tegentibus subinaequilongis laxe pubescentibus ciliolatis. Petala 4—5, ungui- 

 culata, lamina late obovata, margine undulato-crenulata, expansa, ungue calycis lobis 

 aequilongo erecto crassiusculo, in pagina superiore interiore pilis densis retrospectantibus 

 striguloso, supra unguem squama fasciculato-fimbriata, laciniis angustissimis filiformi- 

 bus ramosis crispulis ornata. Discus unilateralis, patellaris, margine infero in labium 

 oblongo-ovatum erectum ascendens, in quo stamina necnon germen inserta sunt, 

 glaberrimus. Stamina 8(7 — 10), petalis longiora, inaequilonga (infera parum longiora), 

 decurva, filamentis longis canaliculatis glaberrimis, cum disci basi connatis, antheris 

 basi fixis late ellipticis glabris. Pollinis granula laevissima ellipsoidea. Germen (et 

 gefminis rudimentum floris ,J) longiuscule stipitatum, ovatum, dense hirsutum, 3-locu- 

 lare. Stylus subulato-filifofmis, stipiti aequilongus, curvatus, stigmate punctiformi. 

 Gemmulae in loculis 2, in medio angulo juxtapositae, erectae, apotropae. Fructus 

 capsularis. Gapsula depresse piriformis vel subglobosa, 3- (rarissime 4-) loba,stylo post 

 anthesin elongato rigido mucronata, longiuscule abrupte stipitata, loculicida. Semina 

 abortu in loculis singula, obovata vel subglobosa, testa crustaceo-coriacea, badia, 

 lucida, umbilico mediocri albido, micropylis circuitu pulvinato-tumidulo pallide 

 brunneo. Embryo curvatus, cotyledonibus superpositis crassis, oleo, aleuro et amylo 

 parco farctis, interiore transverse duplicatim plicata ab exteriore excepta, radicula 

 brevi in testae plicam immersa. 



Arbor parva vel mediocris vel frutex altus. Rami teretes, indistincte striolati, 

 lenticellis paucis, novelli cinereo- vel luride pubescentes, demum glabrati, obscure 

 brunnei, subnigricantes. Folia sub anthesi inevoluta, alterna, exstipulata, impari- 

 pinnata, 1- 4-juga, mediocriter petiolata, juvenilia imprimis subtus pubescentia, mox 

 glabrata; foliola brevissime petiolulata, e basi rotundata ovata ovato-lanceolata, 

 longiuscule acuminata, margine irregulariter serrulata, dentibus plerumque minutis 

 approximatis, membranaceo-chartacea, nervis lateralibus subtus prominulis, reti 

 venarum supra magis conspicuo. Inflorescentiae in ramulis brevibus hornotinis inter 

 perulas coriaceas obtusas complures congestae, praecoces, breves, pseudo-umbelli- 

 formes, revera dichasia 3-flora vel parce cincinnigera vel polychasia 5-flora efformantes. 

 Flores mediocres, longiuscule et graciliter pedicellati, pedicellis sub medio articulatis 

 pubescentibus parceque glandulis stipitatis microscopicis obsitis. 



Species 1, in Mexico et Texas nee non New Mexico latius dispersa. 



ü. speciosa Endl. 1. c. et Nov. Stirp. Decad. (1839) 75; Torrey et Gray, 1. c. Suppl. 

 684; Walp. Rep. I. (1842) 423, V. (1845-1846) 226, Ann. II. (1851-1852) 226, IV. 

 (1857) 381, VII. 4. (1869) 625; A. Gray, 1. c. (1849) 211 1. 178, 179; Schnizl. 1. c; 

 A. Gray, PL Wrigthian. Pars I. (1850) in Smithson. Gontrib. III. (1852) Art. V. 38, 

 Pars II. (1853) ibid. V. (1853) Art. VI. 30; Fenzl in Fl. d. Serres etc. 1. c; A. Gray, 

 PL Lindheimerian. in Boston Journ. Nat. Hist. VI. 2. (1857) 167, 168, coli. n. 363! 

 586!; Torrey, Bot. Mexic. Boundary (1858) 47; Koch, 1. c; L'Hortic. Franc. (1865) 

 1. 15; BailL 1. c. (1874); Garden XII. (1877) 271; Watson, Bibl. Index I. (1878) 181; 

 HemsL in BioL Gentr.-Am., Bot. I. (1879-1881) 212, IV. (1886-1888) SuppL 23; 

 Watson in Proceed. Am. Ac. XVII. (1882) 337, transl. a Urbina in La Naturaleza VI. 



