^sculus. SAPINDACE^. 447 



banks, &c., from W. Penns3'lvania to Iowa, Kansas, Indian Territory, and southward ; fl. 

 April to June. Passes west of tiie Mississippi into 



Var. arguta, Robinson, n. comb. A shrub or small tree without constant floral 

 differences but with leaves mostly 6-7-foliolate and leaflets narrower, lanceolate, and gener- 

 ally more attenuate at botli ends, sharply and somewhat doubly serrate, seemingly of some- 

 what firmer texture and with veinlets often prominulous. — jE. arguta, Buckley, Proc. 

 Acad. Philad. 1860,44.3 ; Young, Fl. Tex. 209 ; Wats. Bibl. Index, 177. yE. glabra, Gray in 

 Hall, PI. Tex. 5. — Mt. Pleasant, Iowa, Mills, to Missouri, Bush, Kansas, Kellerman, Norton, 

 and Texas, Buckley, Hall. An imperfect specimen from Lampasas Co., Texas, Munson, 

 having similar foliage but still narrower and more numerous leaflets (6 to 10) is said to have 

 smooth fruit and may be distinct and of the following section. 



§ 2. Pi VIA, Reichenb. Petals 4, very dissimilar, and at least the upper pair 



of them about equalling or usually exceeding the stamens. Calyx more tubular, 



5-lobed, more or less distinctly gibbous or oblique at the base. — Nomencl. 198 ; 



Pax, 1. c. 276. — Ohio and Mississippi Valleys, S. Atlantic and Gulf States. 



.^. OCtandra, Marsh. (Sweet Buckeye.) In favorable situations a tall tree with 

 roughish gray-brown bark but sometimes (especially southward) flowering as a low shrub 

 only 3 or 4 feet in height : leaves 5-foliolate ; leaflets obovate, gradually or rarely abruptly 

 acuminate, gradually narrowed to a subsessile or petiolulate base, finely sharply and some- 

 what doubly serrate or serrulate, green and glabrous above, paler and finely pubescent to 

 somewhat flocculent-tomentulose beneath : flowers pale yellow, finely pubescent or granular, 

 borne on the upper side of the spreading branches of an ovate short-peduncled thyrse : 

 pedicels short and thick, in anthesis 1 to 3 lines in length : calyx tubular-campanulate, 5 to 

 6 lines in length : lateral petals nearly an inch in length, with broad ovate sometimes cor- 

 date or subcordate crisped blade about equalling the claw; the upper petals still longer, 

 but with small blades much shorter than the elongated claws : stamens usually 7 : smooth- 

 ish fruit mottled, at first oblong or somewhat pear-shaped, at length subglobose. — Arb. 4 ; 

 Sargent, Gard. & For. ii. 364, & Silv. ii. 59, t. 69, 70. ^E'. flava, Ait. Kew. i. 494 ; Pursh, 

 Fl. i. 255; Guimp. Otto & Hayne, 1. c. 27, t. 23 ; Wats. Dendr. Brit. ii. 163, t. 163; Lodd. 

 Bot. Cab. t. 1280; Gray, Man. ed. 1-6. yE. neglecta, Lindl. Bot. Reg. t. 1009. Pavia 

 flava, Moench, Meth. 66. P. neglecta, Don in Loud. Hort. Brit. i. 143. P.fulva, & P. bi- 

 color, Raf. Alsogr. 74. Paviana flava, Raf. Fl. Ludov. 87. — Rich woods, W. Pennsylvania 

 to S. Iowa and southward to Georgia and Texas. Runs into the following variety connect- 

 ing with the next species. 



Var. h^brida, Sargent. Shrul)by or rarely arboreous with " paler bark " : flowers 

 flesh-colored, dull red, or purplish, on pedicels about 3 to 4 lines in length : calyx less 

 inclined to be compauulate or inflated : leaflets more commonly flocculent-tomentulose be- 

 neath. — Silv. ii. 60. JE. Pavia, Willd. Berl. Baum. 12, at least in part, not L. ^E.hybrida, 

 DC. Hort. Monsp. 75. ^E. discolor, Pursh, Fl. i. 255, at least in part ; Lindl. Bot. Reg. 

 t. 310 ; Gray, PI. For. Trees N. A. t. 30. ^. Pavia, var. discolor, Torr. & Gray, Fl. i. 252. 

 yE. flava, y&v. pnrpurascens. Gray, Man. ed. 5, 118. Pavia discolor, Poir. Suppl. v. 769. 

 P. hjjbrida, DC. Prodr. i. 598. P. livida, mutabilis, versicolor, & lucida, Spach, Ann. Sci. Nat. 

 ser. 2, ii. 56, 57, 60. — Occurring with the type but especially south westward. An aggregate 

 of forms differing by trivial and inconstant characters of foliage, pubescence, and shade of 

 flowers, and all more or less intermediate between the foregoing species and the following. 



.<3E. Pavia, L. A neat shrub, 6 to 15 feet high, with slender branches : leaves 5-foliolate; 

 leaflets much as in the last, but averaging somewhat longer (5 to 6 inches) and relatively 

 narrower : flowers scarlet or crimson, slender, 1 to \^ inches in length : pedicels slender, 4 

 to 8 lines long, tending to be aggregated or subfasciculate near the ends of the short 

 branches of the thyrse; this oblong, 6 inches in length and raised on a peduncle 1 to 1^ 

 inches long : calyx more slender and more decidedly tubular than in the preceding species, 

 6 to 8 lines long. — Spec. i. 344 ; Marsh. Arb. 5 ; Pursh, Fl. i. 254. Guimp. Otto & Hayne, 

 1. c. t. 21 ; Bart. Bot. App. 28, t. 15, f. 3. Torr. & Gray, Fl. i. 252 (excl. var.) ; Chapm. Fl. 

 79. yE. himilis, " Lod. Cat."; Lindl. Bot. Reg. t. 1018, hence Pavia humilis, Don in Loud. 

 Hort. Brit. 143. P. atropurpurea, Lindleyana, Willdenowiana, C.) intermedia, & Michiauxii, 

 Spach, Ann. Sci. Nat. ser. 2, ii. 58-61. — Low rich woods and also on dry hillsides through 



