‘ 
470 THE AMERICAN MIDLAND NATURALIST 
688. Tithymalus missouriensis (Norton) Small, Fl. South- 
easts (Ur25.07212 (1903). 
Euphorbia arkansana missouriensis Norton, Rep. Mo. Bot. 
Gard. 11: 103. (1899). j 
Fargo (O. A. Stevens); Medora (Bergman). 
689. Tithymalus Esula (Linn.) Hill. Hort. Kew 174 (4). 
(1768); perhaps identical with T. cupressinus Tab. or T. pinea 
Lobel. (1576). 
Euphorbia Esula Linn. Sp. Pl. 461. (1753). 
Fargo (O. A. Stevens). 
690. Tithymalus Cyparissias Diosc. 4: 165 (TiSvuaAOS 
XVMAPLOG LAS) ace. to Daubeny. 
Euphorbia Cyparissias Linn. Sp. Pl. 461. (1753). 
Leeds. 
691. Tithymalus Peplus Dioscorides 4: 165. Hill, Hort 
Kew (172) (3) No. 1. (1768). 
Euphorbia Peplus Linn. Sp. Pl. 456. (1753). 
Leeds. 
CHAMAESYCE Dioscorides 4: 167. Plinius 24: 15. 
ANALYTICAL KEy (no: ris 692—696). 
I. Seeds with 5 to 6 transverse wrinkles. 
a) Stem leaves slightly serrulate toward the obtuse apex. .C. glyptosperma 
b)iStemuleavies (entire s).)(- aeiatters «as osees oe C. glyptosperma var. integrata 
II. Seeds with 4 transverse wrinkles, stem leaves serrulate from the upper 
part of one margin along the whole other margin. 
aT Prostrate ld? Meck otc ae crane tet aac ea ae oe C. aequata 
D) AO PREAGIIE His Pee fer eieys ateleto oly acuaan cede: C. aequata var. claudicans 
CC) AMEITOCE PIG SAS Wh tur A Pats Ro Doce podcu ene ee Ray ei C. aequata var. erecta 
692. Chamaesyce glyptosperma (Engelm.) Small, Fl. South- 
east? Uso. 712, (1003): 
Euphorbia glyptosperma Engélm in Torr. U.S. & Mex. Bound 
Bot. 187. (1859). 
Devils Lake, Leeds; Kulm (Brenckle). 
693. Chamaesyce glyptosperma var. integrata Lunell in 
Am Midl. Nat. Vol. III: 142. (1913). 
Leeds. 
694. Chamaesyce aequata Lunell in Am. Midl. Nat. Vol. 
I: 204. (1910). 
Leeds. 
