ULMUS 



in >2-] in. long pendulous racemes ; calyx 5-6-parted to 

 the base: fr. elliptic, deeply notched, densely ciliate, 

 K in. long. Sept. Tenu. to Ga.; sometimes planted in 

 avenues in Ga. ; has proved hardy at the Arnold Ar- 

 boretum, Boston. 



r. »aJ-i, Sieb.=Zelkova Kf^ki.— V. TerschamiUi. Hort.= 

 Zelkova Japonica. var. Verschaffeltii. Alfred Rehder. 



UMBELLULAEIA (from Latin umhe! la. a sunshade; 

 having reference to the form of the inflorescence). 

 Lauracece. California Laurel. A monotypic genus, 

 comprising a single Pacific coast tree with alternate, 

 simple, exstipulate Ivs. : fls. small, greenish, in simple 

 pedunculate umbels, which in the bud are surrounded 

 with an involucre of G caducous bracts; petals none; 

 stamens 9; filaments with an orange-colored gland at 

 base; anthers opening by uplifted valves: fr. a sub 

 globose or ovoid drupe with hard endocarp. Propagated 

 by seeds. 



URARIA 



1883 



1 



1^ h,.^ /f J 



2620. California Laurel-Umbelluli 



Californica ( X ! 



Caliidrnica, Nutt. {Oreoddphne Calif&niica, Nees). 

 Fig. 2620. Handsome evergreen tree, 20 to aO or even 

 80 to 90 ft. high, with erect or suberect slender branches, 

 conical outline and dense foliage: Ivs. containing a 

 highly aromatic and volatile essential oil, and burning 

 vigorously in the camp fire, even while green: fls. fra- 

 grant: drupes at first yellowish green, becoming purple 

 when ripe. Dec. to May. — One of the most abundant 

 and characteristic of Californian trees, common in moist 

 places, particularly along streams in the Coast Range 

 foothills and mountains, and attaining its greatest 

 size in the cool, fog -moistened alluvial valleys of the 

 coast of northern California and southern Oregon; it is 

 but rarely seen in the drier interior valleys of the state. 

 It often crowns the higliest points of the coast range 

 hills, up to about 2, .500 feet altitude and far from the 

 nearest spring or other visible sign of moisture, but in 

 such cases the rock strata are nearly vertical and easily 

 penetrated by the long roots which are able thus to 

 reach hidden supplies of water. In such places it usu- 

 ally forms dense clumps or thickets of shrubs or small 

 trees which are frequently shorn by the cutting ocean 

 winds as though by a gardener's shears, suggesting its 

 adaptability for clipped - hedge and wind-break work. 

 The wood takes a beautiful polish and is considered 

 "the most valuable wood produced in the forests of 

 Pacific Notth America, for the interior finish of houses 

 and furniture," for which purposes it is extensively 

 used. It is also used in boat-building for jaws, hits, 

 cleats, cross-trees, etc. The branches are occasionally 

 used for poles for chicken -rousts, as t]u- str.ai'j; ("lor. 

 pervading wood and bark u~ w.ll a^ ha\t'~. is ^ajtl to 

 keep away lice. The leaves ar.- iisi ,1 for ilav.niii- >,,nps 

 and blancmanges but are to., strong' t.. irive as ai:r.'eable 

 a flavor as those of Lanrtix iiobilis or Pi-kiiks Lanro- 

 eerasus. The tree is sometimes cultivated foromament 

 in south European parks and gardens. Professor Sar- 



gent describes it as "one of the stateliest and most 

 beautiful inhabitants of the North American forests, 

 and no evergreen tree of temperate regions surpasses 

 it in the beauty of its dark dense crown of lustrous 

 foliage and in the massiveness of habit which make 

 it one of the most striking features of the California 

 landscape and fit it to stand in any park or garden." 

 Joseph Burtt Davy. 

 UMBRELLA LEAF. See Biphijlleia. 



UMBRELLA PINE. Sciadopifys. 



UNGNADIA (Baron Ungnad, am- 



oassador ot Emperor Rudolph II to 



the Ottoman Porte, who in the year 



f 1 )"() mtr (duced the common horse 



' ti I t western Europe by send- 



1 to Clusius at Vienna). 



' A genus of one species, 



I Ml 1 w Bltckete, a small tree 



^ 1 1 ititted to the horse chestnut 



hut with toliage like a hickory, the 



1\ s being alternate and pinnate, and 



rose colored fis which are borne in 



— --^ small literal clusters or simple 



~,,J.-^*^ corymbs, appearing with the Ivs. in 



early spring. The seed, or "bean," 



has a sweet taste, but is considered 



--^^^ emetic and poisonous. The fruit 



z;^^ 'l"es not have a prickly husk like 



the horse chestnut: it is a smooth, 



leathery capsule and strongly 3- 



lobed. ' The fls. are about % of an 



inch across, polygamous, 4-petaled, and the staminate 



ones have 8 stamens. For fuller account, see Sargent's 



Silva. 



Bpecidsa, Endl. Spanish or Mexican BrcKEVE. 

 Commonly a slender deciduous shrub, 5-10 ft. high or 

 sometimes a small tree: wood brittle: Ivs. alternate, 

 odd -pinnate; Ifts. 5-7. ovate - lanceolate, acuminate. 

 Common in southwest Texas; winter-kills in northern 

 Texas at a temperature of zero. S.S. 2:73. F.S. 

 10:1039. Gn. 19, p. 309. -Int. by P. J. Berckmans. 



W. M. 

 UNICORN PLANT. Marfijnia i>roboscidea. 



UNlOLA (an ancient Latin name of some unknown 

 plant, derived from loius, one. and said to have been 

 applied by Linnaeus to this genus on account of the 

 union of the glumes). Oraminere. Perennials with 

 creeping rootstocks. Species 5, all American. Spike- 

 lets broad and very flat, in loose panicles, several fld., 

 with some of tte lower glumes empty; glumes keeled, 

 nerved, pointed, Init awnless. Cultivated for the orna- 

 mental |.ani.-lis, wlii.'h are suitable for drv bouquets. 



latifblia. Mi.liN. Si'ike-grass. Fig. 2621. Culms 2-4 

 ft.: h -. l.roa.l an. I flat, often 1 in. wide: spikelets large 

 an.l lliin, at maturity drooping on slender pedicels, 

 forming a vury jiraoeful and ornamental panicle. Pa. to 

 Kan. anil southward. — Often grown in hardy borders. 

 One of the best of our hardy native, perennial grasses. 



panicuUta.Linn. Sea Oats. Culm taller, 4-8 ft. : Ivs. 

 narrow and convolute: spikelets narrower, upright on 

 short pedicels, forming an elongated panicle. Sand- 

 hills along the seashore of the southern states. 



A. S. Hitchcock. 



UBABIA (Greek oura, tail, referring to bracts). 

 Jjegnminds(e. Eight species of perennial herbs with 

 woody bases, all of which are accounted for in the Flora 

 of British India. They have 1-9 Ifts. and very numer- 

 ous, small or minute fls. in racemes. Standard broad: 

 wings adhering to the obtuse keel; stamens diadcl- 

 phous: ovary sessile or short-stalked, few-ovuled: style 

 inflexed : pod of 2-6 small, turgid, 1-seeded, indehiscent 

 joints, often placed face to face. 



The following species is the most desirable of the 

 genus. It grows about 5 ft. high and is crowned by 

 a single terminal raceme sometimes 2 ft. long, densely 



