s 



SHORTER CONTRIBUTIONS TO OF.XEUAL OKOLOCY, 1922. 



36, a quarter of a mile south of Slaughter Pen 

 Bluff, Caddo Lake (201) ; Shreveport (210,269). 

 Other specimens, Slaughter Pen Bluff, Caddo 

 Lake (203) ; 6 miles southeast of Xaborton (205, 

 '2011) ; 4 i miles southeast of Xaborton (216); 4 

 miles southeast of Xaborton (20S) ; 3miles south- 

 east of Xaborton (209,21 11 ; 2 \ miles southeast of 

 Naborton (204); 1 mile southeast of Naborton 

 (268) ; half a mile southeast of Xaborton (213) ; 

 ti miles southeast of Mansfield (270); I£ miles 

 north of Mansfield (266). 



Phylum ANGIOSPERMOPHYTA. 



Class MONOCOTYLEDONAE. 



Order ARECALES. 



Family ARECACEAE. 



Genus PALMOCARPON Lesquereux. 



Palmocarpon butlerensis Berry, n. sp. 



Plate IV, figures 2-4. 



Fruit apparently a small, thin-fleshed drupe, 

 in form a prolate spheroid — the long diameter 

 less than one-half greater than the short di- 

 ameter. Varying considerably in size. Sur- 

 face of the stone dark in color (possibly a 

 secondary feature), conspicuously papillose. 

 Hilum large. Minimum dimensions 4 by 5 

 millimeters; maximum 14 by IS millimeters. 

 Abundant but generally slightly deformed. 

 Specific name in allusion to the name of the 

 salt dome from which the material was col- 

 lected. 



This form is very similar to Palmocarpon 

 truncatum, from Golden, Colo., described by 

 Lesquereux in 1878 and supposed to have 

 come from the Denver formation. There is the 

 same variation in size in both, and although 

 Lesquereux makes the flattening of the Golden 

 specimens a specific character this is of doubt- 

 ful validity, as he states that the specimens 

 were generally crushed. I would have referred 

 these Wilcox fruits to Palmocarpon truncatum 

 except for the definite and repeated statement 

 by Lesquereux that the Golden form was 

 smooth, which the Wilcox form is not. In any 

 event the two are closely related. Lesque- 

 reux u compared the Golden forms with the 

 fruits of the existing Sabal mexicana Martius, 

 and similarly the Wilcox fruits may be those 

 of Sabal. Leaves of Sabalitis grayarms Lesque- 



11 Lesquereux, Leo, The Tertiary flora: U. S. Geol. Survey Terr. 

 Rept., vol. 7, p. 12ii, pi. II, figs. 8-9, 1S78. 



reux are widespread in the Wilcox, but they 

 are not conclusively known to be related to 

 Sabal. Moreover, very many modern palms 

 have racemes of small fruits very similar to the 

 present fossils. To mention but a few familiar 

 existing species with fruits very close to the 

 fossil I may cite our dwarf saw palmetto, 

 Serenoa serrulata (Miehaux) Hooker; the royal 

 palm, Boystonea regia (H. B. K.) Cook; the 

 goese-neck palmetto, Sabal etonia Swingle; 

 and the cabbage palmetto, Sabal palmetto 

 (Walter) Roemer and Schultes. 



Occurrence: Butler salt dome, 6 miles north- 

 east of Oakville, Freestone County, Tex.; 4 

 miles southwest of Boydsville, Ark.; Carrizo 

 sandstone half a mile west of Carrizo Springs, 

 Dimmit County, Tex. 



Class DICOTYLEDONAE. 



Order URTICALES. 



Family MORACEAE. 



Genus ARTOCARPOIDES Saporta. 



Arlocarpoides balli Barry, n. sp. 



Plate IV, figures 8-10; Plate V. 



Leaves of variable size, ovate, with a broadly 

 rounded base, which is sometimes slightly 

 inequilateral, and a narrowed and apiculate 

 tip. Margins entire, slightly undulate. Tex- 

 ture subcorlaceous. Petiole invariably missing. 

 Midrib stout, very prominent on the lower 

 surface of the leaf. Secondaries stout and 

 prominent, it to 15 pairs, opposite to alternate, 

 approximately equally spaced and subparallel, 

 the basal one or two pairs at right angles to the 

 midrib, becoming regularly more ascending 

 toward the upper part of the leaf, relatively 

 straight at first, becoming curved in the mar- 

 ginal region and eventually camptodrome close 

 to the margins. Tertiaries well marked, closely 

 spaced, percurrent. Areolation well marked, 

 quadrangular. 



The smallest leaves referred to this species 

 are only 4 centimeters in length and 2 centi- 

 meters in maximum width; the largest is 24 

 centimeters in length and 10 centimeters in 

 maximum width. There are six specimens of 

 various sizes in the collection, and all preserve 

 their specific features unchanged. The type 

 is well marked and clearly different from pre- 

 viously described members of the Wilcox 

 flora. A species from Puryear, Tenn., was 



