440 EUPHORBIACEZ OF THE IVES EXPLORATION. 
minalis umbelliformis puberule radiis ternis iteratim ccenoeeh ; Paes bracteas anguste lineares et involu- 
magna zquantibus ; involucri bemispherici rape tusque minute puberuli dentibus orbiculato-ovatis fim- [172] 
briatis dentatisve, glandulis 5 transversis bilabia nhac bas penis iis duplo latiore (alba seu rosea) 
orbiculata integra suffultis ; bracteolis paucissimis linearibus fim orum masculorum numerosissimorum stipiti- 
us demum exsertis; flore feemineo breviter stipitato erecto gla aioe stylis ditinetin 2 bifidis ovario exquilongis ; 
ramis clavatis divasioatie’s 3 capsule coccis globosis; seminibus ovatis cbsexris depresso- pikeesaleltn ecarunculatis, — 
Base of stem unknown, probably fruticose ; the slender branches below ligneous ; internodes 2—3 inches long. Leaves 
very deciduous, on the branches in threes, 4-7 lines long [the larger almost an inch long], and 1-14 lines wide, 
on a petiole less than a line Jong. Cyme 1-1} inches in diameter. Involucres with the large appendages 4 or 5 lines 
wide. Bracteoles very few (probably 5) rong of the 20 or 30 male flowers. Styles scarcely half a line Jong. Cap- 
sule 24 lines in diameter ; cocci with a slight groove on the back ; seeds about 14 lines long, blackish-brown, covered 
with flattened tubercles. — Distinguished from the closely allied Mexican E. peganoides, Boiss. Cent. Euph. p. 21, by 
the small size of the bracts, the pubescence of the involucre, the shape of the glands, the large and entire appendages, 
and the short stipe of the ovary. The seeds of H. peganoides are unknown.! 
Ill. EUPHORBIACEZ OF THE IVES EXPLORATION. 
From Report UPON THE COLORADO RIVER OF THE WEST. WASHINGTON, 1861, Part 4, BoTAaNy. 
APHORA SERRATA, Torr. Bot. Mex. Bound. Surv., p. 197. Gravelly places on the Upper Colorado ; Janu- [26] 
ary 25 to nl 1. Flowers greenish white. 
Croton (HENDECANDRA) PROCUMBENS, Eschsch.; Torr. 1. ¢. p. 195. 
River, California ; Novembe Grows in tufts two and three feet high. 
EUPHORBIA INZQUILATERA, Sonder in Linnea ; Engelm. in Mea. B. Rep., vol. 1I., ined. Mojave Valley. This is 
the same as Plant. Fendl., No. 803 ; an almost prostrate form, with small narrow leaves, which are only towards the 
end very slightly denticulate ; seeds scarcely undulate or nibbed. This species has a very wide extension ; it is found 
in Florida and the West india Islands, in the west from Nebraska to Texas and to California and Oregon (in India, 
E. Nilayirica ; in South Africa, E. inequilatera and LE. setigera), and in New Holland. 
EuPHORBIA MELANADENIA, Torr. in Bot. Whipple, P. R. Rep. IV., p. 135. E. cinerascens, B., Engelm. in Mex. 
B. Rep. II., ined. In sandy arroyos, Camp 15, forming mats; January 15, in flower, but without fruit. Many pros- 
trate stems, a foot and more in height, from a ligneous root. The specimens before me are distinguished from those 
On the bottom lands of the San Diego 
1 Notes to the Euphorbie of the Botany of the Mexican breve ovatis integris breviter cuspidatis in petiolum brevem at- 
Boundary Survey, by the author, Dr. Engelmann. 
Page 185. E. petaloidea, y. Nuttallii is distinguished by 
species, #. polyclada, from Texas, sent by Wright and Lind- 
heimer, seems to be only a smaller flowered form of Z 
loidea with narrower appendages and smaller seeds. 
cinerascens, B. appendiculata must give way 
to the earlier name of £. melanadenia, Torrey in Bot. Whipp. 
p- 135. — E. cinerascens will have to be named EZ. melana- 
denia, B. subinappendiculata 
P. 187. 2. Sasaviellatare. Sonder. A careful examination 
of the original specimen of £. serpyllifolia, Pers. Syn. 2, p. 
14, preserved in Herb. DeCandolle (a fragment of which te 
been kindly communicated to me), proves that this is the 
sier, discriminating perhaps too nicely, considers the Asiatic 
and African forms as distinct, and comprises them under the 
name of . E. sanguinea, Hochst., to which £. inequi/latera and 
many other nes are referred. 
The following ‘tno new species, of the section Tithymalus 
were collected Dr. Newberry in recent expedition 
under Lieutenant Ives : — 
EvupHorsBia Engelm. in Lieut. Tves’s [173] 
Rep.: perennis, erecta, glaberrima, glaucescens ; foliis 
tenuatis ; umbelle trifide bracteis inferioribus rhombeis, supe- 
rioribus transversis cuspidatis ; involucri glandulis stipitatis 
crenatis incisisve nec cornutis, lobis anne emarginatis ; 
of the Lower 
Lieutenant Ives's » Exped., Ma 
inguished from E£. montana and other al 
peculiar shape of the glands and lobes of the ibys tiee 
Stems 8-12 inches high. Leaves 5-7 lines long and 3-4 line 
[By an —_ this 
mplo in Ives’s 
port, , p- 27, and has priority “of saiinaniens see 
Bot. Calif. a 5 fis Eps. ] 
Eu 'PHORBIA LURIDA, Engelm, nis, multicaulis, 
tota lurida ; foliis peer Be integris 
e very young specimens six inches high. Leaves 5 to 8 
and seeds unknown. 
th 
lines long and 14 to 2 lines wide. Fruit 
