EUPHORBIA, SECTION TITHYMALUS. 141 
Plate 28, H. exigua.—1, Stem leaf; 2, base of floral leaves; 3, invo- 
lucre, staminate pedicel and bract, gland and lobes; 4, capsules; 5, 
seeds. 
Plate 29, #. Helleri.—1, Leaves; 2, portion of involucre, gland, and 
bract; 3, gland, somewhat enlarged, bract and lobe, much enlarged; 4, 
capsule; 5, seeds. 
Plate 30, #. Peplus.—1, Involucre, staminate pedicel and bract, and 
glands; 2, capsule; 3, seeds. 
Plate 31, EH. peplidion.—1, Leaves; 2, involucre, staminate pedicel 
and bract, and glands; 3, old involucre; 4, capsule; 5, seeds. 
Plate 32, E. tetrapora.—1, Involucres, staminate pedicel and bract; 
2, capsule; 3, seeds. 
Plate 33, E. longicruris.— 1, Leaves; 2, portion of involucre, glands, 
staminate pedicel, and bracts; 3, capsule; 4, seeds. 
Plate 34, HZ. commutata.—1, Leaf; 2, glands; 3, portion of involucre 
with staminate pedicel and bracts; 4, capsule; 5, seeds. 
Plate 35, E. Roemeriana. — 1, Leaf; 2, portion of involucre, staminate 
pedicel and bract; 3, portion of involucre and glands; 4, pistillate flower, 
involucre and capsule; 5, seeds. 
Plate 36, Z. crenulata. —1, Leaf; 2, portion of involucre, lobe, gland, 
and bracts; 3, capsule; 4, seeds. 
Plate 37, EZ. crenulata Franciscana. —1, Involucre; 2, portion of in- 
volucre, lobe, and glands; 3, seeds. 
Plate 38, Z. lurida. —1, Leaves; 2, glands and bracts; 3, seed. 
Plate 39, #. lurida Pringlei.—1, Involucre with young capsule; 2, 
involucre with bract, and glands; 3, staminate flowers; 4, capsule; 5, 
seeds. 
Plate 40, HZ. Palmeri. —1, Involucre with capsule, and gland; 2, in- 
volucres; 3, capsule; 4, seeds. 
Plate 41, Z. subpubens.— 1, Involucre and bracts; 2, involucre with 
young capsule. 
Plate 42, H. schizoloba. —1, Portions of involucres, glands, and 
bracts; 2, involucre; 8, capsule; 4, seed. 
Plate 43, EZ. schizoloba mollis.— 1, Portion of involucre and staminate 
pedicel; 2, capsule; 8, seeds; 4, embryos. 
Plate 44, #. montana.— 1, 2, Involucres; 3, capsule; 4, seeds. 
Plate 45, H. odontadenia. — 1, Leaves; 2, involucres and glands; 3, 
seeds; 4, Z. montana trifaris. 
Plate 46, H. brachycera. —1, Involucre, gland, and staminate flower; 
2, involucre, bracts, and staminate pedicel; 3, capsule; 4, seeds; 5, 
branch from plant of Texan form. 
Plate 47, E. chamaesula. —1, Portion of involucre, bracts, gland, and 
stamen; 2, involucre; 3, capsule; 4, seed; 5, leaf margins; 6, leaf margin 
of var. subdentata. 
Plate 48, E. campestris. —1, Small floral leaf; 2, portion of involucre 
with bract, and staminate flower; 3, glands; 4, involucre and floral 
leaves; 5, capsule and old involucre; 6, seeds. 
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