294 SPDKGE FAMILY. 



1. EUPHORBIA, SPUEGE. ( Said to be named for ^upAorJus, physician 

 to King Juba. ) Flowers commonly in late summer. 



§ 1. Shrubby species of the conservatory ^ winter-Jioweringy ivith red bracts or leaves. 



E. pulch^rrima, or Poinsbttia, of Mexico : unarmed stout shrub, with 

 ovate or oblong and angled or siuuately few-lobed leaves, rather downy beneath, 

 those next the flowers mostly entire (4' - 5' long) and of the brightest vermilion- 

 red ; flowers in globular greenish involucres bearing a great yeUow gland at the 

 top on one side. 



E. spl6ndens, of the Mauritius : smooth with thick and horridly prickly 

 stems, oblong-spatulate mucronate leaves, and slender clammy peduncles bearing 

 a cyme of several deep-red apparently 2-petalous flowers ; but the seeming petals 

 are bracts around the cup-like involucre of the real flowers. 



E. flilgens, or jACQuiNi^FLbKA, of Mexico : unarmed, smooth, with slen- 

 der recurved branches and broadly lanceolate leaves, few-flowered ; peduncles 

 shorter than the petioles, what appears like a 5-cleft corolla are the bright red 

 lobes of the involucre. 



§ 2. Herbs natives of or naturalized in the country, the first and last and some- 

 times a few of the others cult, in gardens : fl. late summer. 



* The leaves which are crowded next the flower-cups or involucres have their mar- 

 gins 0?' a part of the base colored (white or red) : stem erect, 1° - 3° high, Q) 



E. marginilta. Wild on the plains W. of the Mississippi, and cult, for 

 ornament : leaves pale, ovate or oval, sessile, the lower alternate, uppermost in 

 threes or pairs and broadly white-margined ; flower-cup with 5 white petal-like 

 appendages behind as many saucer-shaped glands. 



E. heteroph^lla. Rocky banks S. W. : smooth ; leaves alternate, ovate 

 and sinuate-toothed, or fiddle-shaped, or some of them lanceolate or linear and 

 entire ; the upper with red base ; no petal-like appendages to the flower-cup and 

 only 1 or 2 sessile glands. 



E. dent^ta. Rich soU from Penn. S. W. : hairy, only the lower leaves 

 alternate, the upper opposite, varying from ovate to linear, uppermost paler or 

 whitish at base, and the few glands of the flower-cup short-staiked. 



* * The leaves none of them colored : but tlie flower-cup with 5 bright-white con- 



spicuous appendages, imitating a 5-cleft corolla. 2^ 



E. eoroU&ta. Gravelly or sandy soil, from New York S. & W. : 2° - 3° 

 high ; leaves varying from ovate to linear, entire, the lower alternate, upper 

 whoried and opposite ; flower-cnps umbelled, long-stalked. 



» * * Leaves all alike and opposite, green, or with a brown-red spot, short-petioled, 

 with scaly or f ringed-cut stipules : stems low-spreading or prostrate, repeat- 

 edly forked: a small flower-cup in each fork, bearing 4 glands, each bor- 

 dered with a more or less petal-like white or reddish margin or appendage. 

 Of these there are several species, insignificant weeds ; these two are the 

 commonest everywhere in sandy or gravelly open places. 



E. macul&ta. Prostrate ; leaves oblong-linear, very oblique at base, ser- 

 rulate above, blotched in the centre ; pods sharp-angled, very small. 



E. hypericif61ia. Ascending 10'-20' high; leaves ovate-oblong or 

 linear-oblong, serrate, often with red spot or margins; pod blunt-angled; seeds 

 wrinkled. 



* * « » Leaves without stipules, none with colored margins or spots : the flower- 



cups also green or greenish, umbelled, their glands wholly destitute of any 

 petal-like appendage. 

 ■>- Leaves of the commonly erect stem alternate or scattered : those of the umbel-like 

 inflorescence whoried or opposite and of different shape, usually roundish : 

 glands of the flower-cup mostly 4. Weeds or weed-like. 



++ Glands of the fiower-cup transversely oval and obtuse. (T) 

 E. platyph^Ua. Nat. from Europe N. : upper stem-leaves lance-oblong, 

 acute, minutely serrulate ; uppermost heart-shaped ; floral ones triangu!ar-ovr.te 

 and heart-shaped; umbel 5-rayed; glands large and sessile; pod "beset with 

 depressed warts ; seed smooth. 



