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Show [7] 148 loos ly coiled thr ad which frC'quenlly ramifies with ana, tomosing branche . Th whole testa i formed of th('. singular vc · cl~. ~~mbryo nearly a large as the se d; ·otylc<lons fo1iarcou ; radi cle pointing downward. There can b littl doubt q.f thC' propriety of uniting Dronnia and li'ouqui cria. J•~ach genus wa. founded on a single pccies, and both pla11ts seem to be 'ry little known to ~uropean botani ls. Of th' former th flow ·rs arc impcrfc ·lly dc-cribcd, and of the !all r, the fruit is ·unknown. Our plant partakrs of the chara ·ter of both genera. In the ovary the placent<C' meet in the axis, but only slightly cohere; finally they unite, hut in fruit the valv ·s of the cap ule cparalc from the axis, to which the seeds remain attach d. As to the affinities of l~ouquicria, I am inclined to adopt the opinion of Lindley, that it i. very ncar l)olemoniac a', and particularly to Cantua. It differ:, how vcr, in it clistin t. imbricat cl sepals, (which arc c actly those of onvolYulu. ,) more num rous and hypogynous stamens; and very sparing al.bumen, a. w .11 a: i~ habit. It i certainly very unlike Frank - ntacete, to wh1ch 1t 1s appended by Endlicher. Kunth placed it among genera allied to Portulacacc<r. CONVOL VULACE.!E. ·• Ipomma I ptophylla, ToT'r. in Frf>m. 1st repoTl, p. 94. Upper part of the Arkansas and head water of th, Canadian. The stems are often er ·ct, about two feet ~igh, and of a bu. hy appearance. From the app_ aran<' of the_ specimens, I should suppo the plant were a perenntal, but acC'orclmg to Dr. James it is an Ztnnua.l. One or two other Con vol vul acc<e were j n the col 1 ction but I have nol dete~min u them to my ~atisfa('tion. ' Nycterium lobatum. Between Fort Leavenworth and the head of th Arkansa . Datura mete], Wil~d .? Vall~y of the Gila. It grows from four to fiv fc .t h1gh, w1th spreachng branche.. Perhaps introduced. ~lanm~ tnfiorum, Nutt. pper part of the Arkansas, and on the tnbutanes of the Arkansas. Another spe ·ies of olanum was founcl on the Del N ort below anta [1'6. T.h~ whole plant is clothed ~ith ~den, e yellowish white pubesce~ce. 'lhe terns ~re rough, w1th nHnute slender prickles. ~eaves .. lmcar-oblong, cnt1re, rather obtuse, prickly along the midnb: Flowers, two or three together at the summit of the branches, wh1te.1 stamens 5; anthers equal. GENTIAN ACE&. Eustoma Russelianum, Don. Near the bank of the San Pedro. A showy plant. Erytbrrea Beyriehii, Torr. anrl Gr. E. tricantl~a B. Griseb. Val· ley of U~e Del N ortc, and along the Gila. 149 [7] OLEACEJE. Fraxinus v lutina., n. sp. Brandte:, p tiolc. , and uncl r surfare of the }('aveH, ·lothcd with a densr soft puhc ·r nc '· Lcafl tH 3 to 5 rhombic ovate, cun ate at the bas·, roar ly serrat or toothed, s~aringly pubescent above. Fn~il narro~ly ?blanccolate, nearly entire at the ape , about thrcc· fourtbs oi an ll\ch long. A small tree u ually from 15 to 20 feel high. C: row in th region h<'lw' n the 'waters of the Del Norte and the Gila; also on the Mimbr 's, a tributary of the latter n cr. NYCT OINACE Jl~. Abronia mellifera, I!oolc. Vall ·y of the D 1 Norte. .A. ( Tripterocctlyx) micranthum, Ton·. in Frent. 1st report, p. 96. Va11ey of th J) l ortc. This differ in som • r pccts from fi' r '•monl'. plant. The pedun-cle ar elongated, an(l the fruit is more tha.n nn in ·h long, with very broacl wings. Th structure of th 8ced is pre ·i. ely the sa.me as in that plant, the inn r ·otyl •don of the c9ndupli<'at' •mbryo being abortive. It i. wanting al o in A. mcllif•ra. In , cv ral sp cies of this genus, if not in all of them, th fil:\menls adh re throughout nearly their whole lcn glh to the tub of th p ·rianth. The lobe of th pcrianth arc dilat ·d, and deeply cmarginatc, but appear ovate in the bud, from the lobul s b(•in·g onduplicate. ITENOPO DIACEJE . 'arcobatus vcrmie\Jlatus, S. Maximilioni, Nees in J>r'i'nce Ma;r;int-. trav., Engl. ed., p. 518. Fremontia verm'icularis, To'rr. in F7'cm. 1st Tepo'fl, p. 95; and 2d 'rl'JJO?·t, ]J. 317. Bat~is ve-rmiculaTis, 1/oolc, fl. BoT. Jlm. 2, p. 1 . Abundant on th D ·1 Nort ·,and upp r part of the vali<'Y of the Gila. This is the pulJJY thorn of' Lewis and lark. lt has a very <'X-t~ n . ivc range in the desert region s on both sides of the mountain . mce my noti ·es of this plant wcr' published in Ii'rhnont's reports, I have ascertained that ee ' de scription of hi: g 'n us, ~ arcobatus, dates. a littl • ant erior to mine, so that his nam' must be adopt d. Obton arg ·nlt·a, Moq. .fltr·iple x arrrentea, Nutt. Abundant in sandy alin plact. on the Dt'l Norte. ~. p o ~ y ·a r p a , n. sp. V a 11 <' y of t h G i 1n . . hur?t1 a lana.ta, Moq. Va II ry of t h ' Del ortc. 1 A shrub by Sa- 11 .ornw, an Atriplcx, and a species of ~ 'ueda, wcr found in saline sods along the Gila. AMA RANTIT ACEiE. Amaranthu: hybridus, VaT.? Glabu. tem and leave n ~rly sm.ooth, flow r (purpli ·h) crowclctl in a tlen e eompoun<l term~nal sp1ke; urad somewhat awn<'d, short •r than th tl.ow rs; utnclc opening tran ver ely. On the Del Norte, b low Santa Fe. |