왕느릅나무(1)
https://daehyo49.tistory.com/7809300
왕느릅나무(2)(Ulmus 종 검색표)
https://daehyo49.tistory.com/7810013
왕느릅나무(3)
https://daehyo49.tistory.com/7815164
미국느릅나무(1)(미국느릅나무와 왕느릅나무 잎, 열매 비교)
https://daehyo49.tistory.com/7809290
미국느릅나무(2)
https://daehyo49.tistory.com/7810767
학명: Ulmus davidiana Planch.
분류: 느릅나무과(Ulmaceae)
사진: 인천수목원 2012.04.07
참조: 당느릅나무 겨울눈 http://blog.daum.net/daehyo/7809183
아래: 2019.09.11 아차산
FNA 설명
Trees , 21-35 m; crowns spreading, commonly vase-shaped.
Bark light brown to gray, deeply fissured or split into plates. Wood soft. Branches pendulous, old-growth branches smooth, not winged; twigs brown, pubescent to glabrous. Buds brown, apex acute, glabrous; scales reddish brown, pubescent. Leaves: petiole ca. 5 mm, glabrous to pubescent. Leaf blade oval to oblong-obovate, 7-14 × 3-7 cm, base oblique, margins doubly serrate, apex acute to acuminate; surfaces abaxially glabrous to slightly pubescent, tufts in axils of veins, adaxially glabrous to scabrous. Inflorescences fascicles, less than 2.5 cm, flowers and fruits drooping on elongate pedicels; pedicel 1-2 cm. Flowers: calyx shallowly lobed, slightly asymmetric, lobes 7-9, margins ciliate; stamens 7-9; anthers red; stigmas white-ciliate, deeply divided. Samaras yellow-cream when mature, sometimes tinged with reddish purple (s range of species), ovate, ca. 1 cm, narrowly winged, margins ciliate, cilia yellow to white, to 1 mm. Seeds thickened, not inflated. 2 n = 56.
Flowering winter-early spring. Alluvial(충적토) woods, swamp forests, deciduous woodlands, fencerows, pastures, old fields, waste areas; planted as street trees
The American elm is susceptible to numerous diseases, including Dutch elm disease. Ulmus americana has been a street and shade tree of choice because of its fast growth and pleasant shape and size. The species still exists in substantial numbers both as shade trees and in nature.
출처: http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233501325
미국느릅나무와 왕느릅나무 비교
잎
미국느릅나무 잎
미국느릅나무의 거치는 예리한 복예거치로 내곡하는 것으로 보인다
왕느릅나무 잎
왕느릅나무의 거치는 다소 둔한 침상거치로 복예거치이나 내곡하지는 않는 것으로 보인다
열매
미국느릅나무
미국느릅나무는 열매자루(꽃자루)가 느릅나무 다른 종들보다 길고 열매에 긴털이 밀생한다
왕느릅나무
왕느릅나무는 과병이 거의 없으며 열매에 짧은 털이 있다