ULMUS 



UMBELLULARIA 



3413 



broadly ovate, 2-2} 2 in- long, glabrous. Var. Wredei, 

 Rehd. (U. campestris Dampieri Wredei, Hort. l~. 

 Wredei aiirea, Hort.). Like the preceding, but Ivs. 

 yellowish. M.D.G. 1898:160. Var. pendula, Rehd. 

 \l~. mtens var. pendula, Henry). With slender pendu- 

 lous branches. Var. Webbiana, Rehd. (U. campestris 

 Webbiana, Lee). Pyramidal tree with ascending 

 branches: Ivs. folded "longitudinally. Var. variegata, 

 Rehd. (,(*. campestris variegata, Dum.-Cours. U. cam- 

 pestris var. argenteo-variegata, Rehd.). Lvs. variegated 

 with white, smooth above. 



12. pumila, Linn. (U. microphyUa, Pers. U. sibirica, 

 Hort.). Small tree or shrub, with slender pubescent, 

 sometimes pendulous branches: Ivs. oval-elliptic to 

 elliptic-lanceolate, short-petioled, acute, firm, dark 

 green and smooth above, pubescent when young 

 beneath. ^4-8 in. long: fls. short-pedicelled; stamens 

 4-5, with violet anthers: fr. obovate, with the nutlet 

 somewhat above the middle, incision at the apex reach- 

 ing about half-way to the nutlet. Turkestan to Siberia 

 and X. China. ~Gn. 65, p. 133. A graceful small 

 hardy tree. Var. arbdrea, Litwinow (U. pinnata- 

 ramosa, Dieck. U. turkestdnica, Regel). Tree with long, 

 pinnately branched shoots pubescent when young: Ivs. 

 oblong-lanceolate. 1-2 }- in. long; petioles pubescent 

 at first. Var. pendula, Fiort. (U. parvifblia pendula, 

 Hort. Planer a repens, Hort.), has slender more pendu- 

 lous branches. 



13. parvifolia, Jacq. (U. chinensis, Pers.). CHTNTSE 

 ELM. Half -evergreen small tree or shrub, with 

 spreading pubescent branches: Ivs. ovate to obovate 

 or oblong, very short-petioled and little unequal at 

 base, acute or obtusish, subcoriaceous, simply serrate, 

 glabrous and glossy above, pubescent beneath when 

 young, usually glabrous at length, %-2 in. long: fls. 

 short-pedicelled, in clusters; stamens 4-5, much ex- 

 serted: fr. oval to elliptic, notched at the apex, 

 with the seed in the middle, J^-J^in. 



long. July-Sept. X. China, Japan. 

 S.I.F. 1:37. R.H. 1909, pp. 398, 399. 

 Has proved hardy near Boston. 

 The recently described U. Sieboldii, 

 Daveau, and U. Shirasaicana, Daveau, 

 are probably only forms of this species ; 

 they are said to differ in their decidu- 

 ous Ivs. and the former besides by the 

 persistent deeply fissured bark, exfoliat- 

 ing in the other two species and the 

 larger fr. exceeding ] 2 in. (B.S.D. 1914: 

 24, 25) ; the latter differs in the crenate- 

 dentate Ivs. with 8-10 pairs of veins 

 and in the contracted fr. (B.S.D. 1914: 

 24; also S.I.F. 1:37 represents this 

 form). 



14. crassifplia, Xutt. CEDAR ELM. 

 Tree, attaining SO ft., with spreading 

 limbs and slender, often pendulous 

 branches, often furnished when older 

 with 2 opposite corky wings: Ivs. short- 

 petioled, ovate to ovate-oblong, usually very unequal at 

 the base, obtuse or acute, doubly and obtusely, some- 

 times almost simply serrate, subcoriaceous, somewhat 

 rough and lustrous above, pubescent beneath, 1-2 in. 

 long: fls. in 3-5-fld. very short racemes: stamens 5-8, 

 little exserted: fr. oval-elliptic, pubescent, notched, 

 Hin. long. Aug. Miss, to Ark. and Texas. S.S. 7:315. 

 Tender X. 



15. serotina, Sarg. Tree, with short spreading and 

 pendulous branches, often furnished with irregular 

 corky wings: Ivs. oblong to obovate, unequal at the 

 base, acuminate, doubly serrate, glabrous and lustrous 

 above, pubescent on the veins beneath, 2-3 in. long: fls. 

 in 1-1 J'-in.-long pendulous racemes; calyx 5-6-parted 

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



long. Sept. Tenn. to Ga.; sometimes planted in 



avenues in Ga. (S.S. 14:718); has proved hardy at the 

 Arnold Arboretum, Boston. 



U. arbiitcula, Wolf (U. glabraxTJ. pumila). Shrubby tree: hra. 

 elliptic to elliptic-oblong, doubly serrate, nearly equal at the base, 

 J-4-3 in. long, on shoots to 6 in. long. Originated in St. Petersburg. 

 U. Bergma'nniana, Schneid. Allied to U. glabra. Tree, to 50 ft.: 

 branchlets glabrous: Ivs. obovate-oblong to elliptic, acuminate, 

 doubly serrate, glabrous, 2Ji-5 in. long; petioles very short: fr. 

 roundish-obovate, glabrous, Ji-J-iin. long. Cent. China. Var. 

 lasiophjjtta, Schneid. Lvs. pubescent beneath. W. China. U. 

 Daridiana, Planch. Allied to U. japonica. Medium-sired tree: 

 young branchlets glabrous, later pale grayish brown or pale brown: 



Koch. Allied to U. glabra. Branchlets pubescent: Ivs. elliptic to 

 elliptic-oblong, glabrous and nearly smooth above, slightly pubes- 

 cent beneath, 3Jy-6 in. long: fr. obovate, with the seed in the 

 pubescent middle. Transcaucasia, Armenia. The plant cult, 

 under this name is U. fulva. U. Keakii, Sieb.=Zelkova serrata. 

 U. macrocdrpa, Hance. Small tree or shrub: young branchlets 

 pubescent, later pale brown, often with 2 corky wings: Ivs. ovate, 

 coarsely doubly serrate, rough above, slightly pubescent or nearly 

 glabrous below, 1 Js-3 in. long: fr. obovate, with the nutlet in the 

 middle, pubescent and ciliate, about 1 in. long. N. China. Possibly 

 U. rotundifolia, Carr. (R.H. 1868, p. 374), belongs here. 17. 

 minor, Mill, (U. surculosa var. argutifolia. Stokes. U. sativa, 

 Moss, not Mill. U. Plotii, Druce). Allied to U. foliacea. Suckering 

 tree, to 90 ft., with ascending branches and pendulous branchlets: 

 Ivs. obovate or elliptic, dull and slightly scabrous above, pubescent 

 beneath at first, 1 jz-2} in. long; petioles Hin- long: fr. narrowly 

 obovate, Jiin. long. Eu. G.C. III. 50:4O8, 409; 51:235. R.F.G. 

 12:660. U. Pldtii, Druce=U. minor. U. sorira, Moss=U. minor. 

 U. Verschafffltii, Hort-=Zelkova Verschaffeltii. U. Wilsoniana, 

 Schneid. Tree, to 50 ft.: young branchlets pubescent, later brown 

 and often corky: Ivs. elliptic or elliptie-obovate, doubly serrate, 

 smooth above, finely pubescent or nearly glabrous beneath, 1 K-4 

 in. long: fr. obovate with the nutlet near the apex, glabrous, about 

 Jtfn. long. Cent. China. ALFRED REHDER. 



UMBELLULARIA (from Latin umbetta, a sunshade; 

 referring to form of inflorescence). Laurdccse. CALI- 

 FORNIA LAUREL. Tall umbrageous tree, 

 glabrous, used as a shade tree in Cali- 

 fornia and similar regions. 



Leaves alternate, evergreen, petioled, 

 slightly coriaceous: fls. small, greenish, 



3883. California laurel. 

 Ombellularia calif ornica. 



in simple pedunculate umbels, which in the bud are 

 surroundea by an involucre of 6 caducous bracts; 

 perianth-tube very short; limb with 6 segms.; stamens 

 9, filaments with an orange-colored gland at base, 

 anthers opening by uplifted valves: drupe subglobose or 

 ovoid with a hard endocarp. One species, Calif . Prop, 

 by seeds. 



califoraica, Xutt. (Oreoddphne californica, Nees). 

 Fig. 3883. Handsome evergreen tree, 20-30 or even 

 80-90 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 campfire, 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 



