3412 



ULMUS 



tufts, 3Ji-5 in. long; pairs of veins 14^18; petiole ^in. 

 or slightly longer: fr. oval-obovate, with closed notch; 

 seed above the center. Var. pendula, Rehd. (U. 

 Smithii, Henry. U. glabra var. pendula, Loud.). 

 DOWNTON ELM. Tree with ascending branches and 

 long pendulous branchlets more or less pubescent when 

 young: Ivs. oval, firm, long-acuminate, very unequal at 

 the base, glabrous and smooth above, sparingly pubes- 

 cent beneath, about 3% in. long; petiole j^in. long, 

 pubescent: stamens 3-5: fr. obovate, %in. 

 long, with open notch; seed above the center. 

 Var. belgica, Rehd. (U. belgica Burgsd. U. 

 batamna, Koch. U. latifolia, Poederle. U. cam- 

 pestris var. latifolia, Gillekens). BELGIAN ELM. 

 Tall tree with a straight rough-barked st. and 

 a broad crown: young branchlets more or less 



Eubescent: Ivs. obovate-elliptic, very oblique at the 

 ase, slightly scabrous above, soft-pubescent beneath, 

 3-5 in. long, with 14-18 pairs of veins; petioles ^-Kin- 

 long: fr. nearly 1 in. with the seed slightly above the 

 middle. Much planted in Belgium and Holland. Var. 

 Dumontii, Rehd. ([7. belgica var. Dumdntii, Henry. U. 

 campestris var. Dumdntii, Mott.). Similar to the pre- 

 ceding variety with more ascending branches forming a 

 narrower more pyramidal head. Var. Klemmer, Rehd. 

 (U. campestris var. Klemmer, Gillekens. U. campes- 

 tris Clemmeri, Hort. U. Klemeri, Spaeth). Tall tree 

 with a smooth-barked st. and ascending branches form- 

 ing a narrow pyramidal head: young branchlets with 

 short hairs: Ivs. ovate, short-acuminate, glabrous, but 

 scabrous above, minutely pubescent beneath, about 3 

 in. long; pairs of veins about 12: fr. with the seed close 

 to the notch at the apex. Tree of rapid growth much 

 planted in Belgium. Var. superba, Rehd. (U. montana 

 superba, Spaeth, also of Morr.? U. superba, Henry. 

 17. prasstans, Schoch). Narrow pyramidal tree with 

 smooth bark and ascending branches: young branch- 

 lets glabrous: Ivs. obovate or obovate-elliptic, very 

 oblique at the base, glabrous and smooth above, gla- 

 brous below except small axillary tufts, with 15-18 

 pairs of veins, 3-5 in. long; petioles M~/^in. long, spa- 

 ringly pubescent: fls. 5-merous. Var. Pittefcrsii, Rehd. 

 (U, Pitteursii, Kirchn. "Orme Pitteurs," Morr.). 

 Vigorous-growing tree with large Ivs. similar to U. 

 glabra, to 8 in. long, broadly ovate, said to produce 

 annual shoots to 9 ft. long. B.H. 2, pp. 133, 136. 



11. foliacea, Gilib. (U. nitens, Moench. U. glabra, 

 Mill., not Huds. U. campestris var. Uevis, Spach. U. 

 campestris var. glabra, Hartig. U. surculdsa var. 

 glabra, Stokes). SMOOTH-LEAVED ELM. Tree, with 

 straight trunk, wide-spreading branches and usually 



3881. Camperdown elm. Ulmus glabra var. Camperdownii. 



pendulous branchlets; suckering: bark gray, deeply fis- 

 sured: young branchlets glabrous or nearly so: buds 

 minutely pubescent: Ivs. oval or obovate, acuminate, 

 very unequal at the base, lustrous and smooth above, 

 with white axillary tufts beneath and glandular, spa- 

 ringly and minutely pubescent at first, doubly serrate, 



ULMUS 



not ciliate, 2-3^ in. long; pairs of veins about 12; 

 petiole M~/^in. long: fls. 4-5-merous: fr. obovate, 

 cuneate at the base, broad and rounded at the apex; 

 the seed nearly touching the closed notch at the apex. 

 Eu., N. Air., W. Asia. S.E.B. 8:1286 (as U. suberosa 

 glabra). R.F.G. 12:664. H.W. 2:37, p. 3 (as U. 

 campestris). A variable species with several geographi- 

 cal varieties and a number of garden forms. Var. 

 suberdsa, Rehd. (17. suberdsa, Moench, not Ehrh. 



3882. Ulmus glabra var. Camperdownii. ( X K) 



U. campestris suberbsa, Wahl.). Branches with corky 

 wings. R.F.G. 12:663. Var. propendens, Rehd. (17. 

 glabra propendens, Schneid. U. microphylla pen- 

 dula, Hort. U. suberdsa pendula, Hort.). With pendu- 

 lous branchlets, and small Ivs. about 1 in. long. M.D.G. 

 1901:166. Var. italica, Rehd. (U. nitens var. itdlica, 

 Henry). Similar to the typical form, but Ivs. more 

 coriaceous, with 14-18 pairs of veins, quite glabrous 

 at maturity except conspicuous axillary tufts beneath; 

 petioles J^in. long. Italy, Spain, Portugal. Var. 

 umbraculifera, Rehd. (U. campestris umbraculifera, 

 Trautv. U. densa, Litwinow). Tree, with dense globose 

 head, otherwise like the type. Persia, Armenia. Gt. 

 30:1034. M.D.G. 1900:579. M.D. 1910, pp. 72, 73. 

 Var. gracilis, Rehd. (U. campestris umbraculifera 

 grdcilis, Spaeth). Similar to the preceding but with a 

 more ovoid, not globose head, and smaller Ivs. Var. 

 Koopmannii, Rehd. (U. campestris Koopmannii, 

 Hort. U. Kobpmannii, Spaeth). Closely allied to var. 

 umbraculifera, but with a dense oval head: branchlets 

 paler: Ivs. ovate, 1-1^4 in. long. Var. Ruepellii, Rehd. 

 (U. campestris Ruepellii, Spaeth). Similar to var. 

 umbraculifera, but branchlets pubescent and branches 

 slightly corky: Ivs. rather small, scabrous above. Var. 

 stricta, Rehd. (U. stricta, Lindl. U. nitens var. stricta, 

 Henry. U. campestris var. cornubiensis, Loud.). 

 CORNISH ELM. Narrow pyramidal tree with ascending 

 branches: young branchlets often pubescent at the 

 insertion of the Ivs.: buds glabrous: Ivs. obovate to 

 oval, somewhat unequal at the base, 2-2 ^ in. long, 

 glabrous and smooth above; petioles M m - long: fls. 

 usually 4-merous: fr. %in. long, narrower than in the 

 type. S. W. England. Var. Wheatleyi, Rehd. (U. 

 nitens var. Wheatleyi, Henry. U. campestris Wheatleyi, 

 Simon-Louis. U. sarniensis, Lodd. U. campestris 

 monumentalis, Hort., not Ruiz). WHEATLEY, JERSEY, 

 or GUERNSEY ELM. Narrow pyramidal tree with 

 ascending branches : Ivs. similar to those of the preceding 

 variety, but broader, with less conspicuous axillary 

 tufts and glandular beneath and on the petiole. G.C. 

 III. 41 : 150. M.D. 1910, p. 273. Var. monumentalis, 

 Rehd. (U. campestris monumentalis, Ruiz). Columnar 

 tree with few upright branches and numerous short 

 branchlets: Ivs. crowded, rather short-pet ioled, dark 

 green and somewhat rough above. Var. Dampieri, 

 Rehd. (U. nitens var. Dampieri, Henry. U. campestris 

 Dampieri, Spaeth). Fastigiate tree, forming a narrow 

 pyramidal head: Ivs. crowded on short branchlets, 



