;ArixuAiJ-:s. 



75 



ondarios thin, about oiglit suboppdsito to alter- 

 nate ])airs. sul)e<nially spaced: they diverge 

 friini the ]iii(h-il) at angles <if about 4.j° and 

 pursue a sligiitly but regularly eurved, sid)- 

 parallel eourse, eventually becoming approxi- 

 mately parallel with the lateral margins and 

 eamptodrome. Tertiaries commoidy obsolete. 



A s])ecimen collected at Wieklid'e, Ky., by 

 R. H. Loughridge and ideiitilied as Sapindus 

 aiigusiiJhUus by Lesquereux shows the terminal 

 leaflet and one of the lateral leaflets attached 

 to the rachis, indicating that the leaves, were 

 odd-pinnate, as in the existing Sapiiulus mar- 

 giiKifiis Willdenow. The terminal leaflet is 

 slightly larger than the lateral leaflet preserved 

 and has a somewhat difl'erent secondary vena- 

 tion, tlie upjier secondaries being continued as 

 a marginal hem, thus resendiling a Myrcia or 

 Fieus. 



This is a chai-aeteristie specie's of Sapindus 

 of the forms that bear numerous small falcate 

 leaflets. A specimen of it from Louisiana was 

 referred to Sapimliis angriiitifolius by HoUick, 

 and several from Kentucky were also referred 

 to that species by Lesquereux. Sapindus 

 angustlfolius comes from the Miocene of Colo- 

 rado, and though all the species of Sapindus 

 that bear small falcate leaflets are much alike, 

 this Wilcox form really has nothing in common 

 with Sapindus angustifolius, the leaflets of 

 which are widest toward the base and gradu- 

 ally taper upward to a narrow extended tip. 



This species may be distinguished from the 

 several other small Wilcox species of Sapindus 

 by the same features that distinguish it from 

 Sapindus angustifolius Lesquereux. It sur- 

 vives the Wilcox and is found in the Gosport 

 and Lisbon formations of th(> Claiborne group 

 and is rather common in the Lisbon formation 

 near Newton, Miss. It is much like the leaves 

 from the Tertiary of Ecuador described by 

 Engelliardt' as Myrciaria tenuifolia. 



Occurrence. — Holly Springs sand. Early 

 Grove, Marshall County, Miss, (collected by 

 W J McGee). Grenaihi formation, Grenada, 

 Grenada County, Miss, (collected by E. N. 

 Lowe and E. W. Berry). Wilcox group, Kan- 

 sas City Southern Railway, 1 mile west of 

 Shreveport, Caddo Parish, La. (collected by 

 A. C. Veatch), and Bolivar Creek, 3^ miles 

 north of Harrisburg, Poinsett County, Ark. 



> Enfiolhardt, [Hermann, Scnckenbergische naturf. Gesell. .\bh., vol. 

 19, p. 17, pi. l,rig. 24, 1S95. 



(collected by L. W. Ste]ihensoii). Lagrange 

 formation (in beds of Wilcox age), Wickliffe, 

 BaOard County, Ky. (collected by R. II. 

 Lougliridge, 2 specimens No. 2699), and Pur- 

 year, Ileniy County, Tenn. (collected by E. W. 

 Berry). 



('(dlrctions. — U. S. National Museum: New 

 York Bolanical Garden. 



S.A.ri\i)us i.i.NE.vniFOLirs Berry, n. sp. 



VhU's l.XIII, (i<riii-es 2-5, and ('IX, figure 4. 



Siilij: (iniinsld. I,es(|uereux ( iiol A lexandcr Braun or Ileer), 

 V . S. Nat, Mils. Proc, vol 11, p. 13, 188.S. 

 Loughridge, Rejiort on the geological and econom'C 

 featuresoftheJackson'spurchase region, p. 19,S, 1,S,S8. 



Description . — Leaflets narrow, linear-lanceo- 

 late and markedly falcate in outline, the ape.x 

 gradually narrowed and pointed and the base 

 narrow, acute, and nearly equilateral. Length 

 ranges from 6 to 1(1 centimeters. Ma.ximum 

 width, which is below the middle, ranges from 

 7 to 14 centimeters. Margins entire, sub- 

 parallel for most of their length, somewhat 

 revolute. Leaf substance thick and texture 

 coriaceous. Petiolule long and stout, pre- 

 served for a length of 7 millimeters. Midrib 

 stout, considerably curved. Secondaries thin, 

 immersed, and mostly obsolete, 12 to 14 sub- 

 opposite to alternate pairs, diverging from 

 the midrib at wide angles, rather straight until 

 they reach the marginal region, where they 

 curve abruptly upward to form a broad flat 

 arch, subparallel with the margins. Tertiaries 

 obsolete. 



This is a well-marked slender falciform 

 species, not especially close to any of the other 

 Wilcox species and readily discriminated by 

 its narrow elongated falcate form, subequi- 

 lateral lamina, long petiolule, coriaceous tex- 

 ture, and immersed v<Miation. It is much like 

 a species of Sapindus of the Claiborne group 

 but more linear and may possildy represent 

 an ancestral form. 



Lesquereux in 1S88 identifled three frag- 

 ments from Wickliffe, Ky., as Salix angusia 

 Alexander Braun (U. S. Nat. Mus. No. 2.588). 

 They do not resemble that Miocene species, as 

 the texture alone sufliciently indicates, but 

 represent the present species, a single specimen 

 of which was subsequently collected from the 

 same locality by L. C. Glenn. 



Occurrence. — Holly Springs sand, Early Grove 

 and Ilolly Springs, Mar.shall County, Miss, (col- 



