서양물통이

 

2014년 한국식물분류학회에서 황희숙 등이 포스터로 발표하였으나 아직 정식으로 등록되지 않았다한다

 

 

학명 : Parietaria pensylvanica Muhlenberg ex Willdenow

분류 : 쐐기풀과(Urticaceae)

 

 

사진: 2019.05.12  한강 동작구

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

아래: 2019.06.17 위의 장소

 

 

 

 

 

 

 

 

아래: 2020.06.03 위 장소

 

 

잎 가장자리

잎 표면 (루페 이용)

잎 뒷면(루페 이용)

 

 

 

 

아래 : 2022.06.27 동작대교

 

 

 

 

 

 

아래 : 2023.05.08 동작대교

 

 

 

 

 

 

 

아래 : 2023.06.19 한강철교

 

 

 

이전에 동작대교에서 본 것들은 모두 경사진 축석 이음새에 자라고 있었는데 이곳 한강철교 밑에서는 철교 아래 그늘지고 습한 곳에 큰 군락으로 자라고 있다.   

 

 

 

 

 

 

 

 

 

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FNA 세밀화

 

 

 

 

 

 

 

Flora of North America (FNA)

 

Parietaria pensylvanica Muhlenberg ex Willdenow, Sp. Pl. 4(2): 955. 1806.

(학명 이명)

Parietaria obtusa Rydberg ex Small; P.o ccidentalis Rydberg; P. pensylvanica var. obtusa (Rydberg ex Small) Shinners

(설명)

Herbs , annual, 0.4-6 dm. Stems simple or freely branched, decumbent, ascending, or erect. Leaf blades narrowly to broadly elliptic, lanceolate, oblong, or ovate, (1-)2-9 × 0.4-3 cm, base narrowly cuneate, apex acuminate to long-attenuate or obtuse to rounded; proximal pair of lateral veins arising above junction of blade and petiole. Flowers: involucral bracts 1.8-5 mm, usually less than 2 times length of achene; tepals 1.5-2 mm, shorter than bracts. Achenes light brown, symmetric, 0.9-1.2 × 0.6-0.9 mm, apex obtuse, mucro apical; stipe straight, short-cylindric, centered, basally dilated. 2 n =14, 16.

Flowering spring-late fall. Dry ledges, talus slopes, waste and shaded places, primarily in neutral to basic soils, and reported from margins of hot springs in northernmost locations; 0-2400 m; Alta., B.C., Man., ont., Que., Sask., Yukon; Ala., Ariz., Ark., Calif., Colo., Conn., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo.; Mexico.

 

Some extremes of Parietaria pensylvanica with short, oblong or ovate leaf blades strongly resemble P . hespera var. hespera . Parietaria hespera is usually more delicate and has thinner leaves with the proximal pair of lateral veins arising at the junction of blade and petiole. Leaf shape and texture tend to overlap in the two species, but in P . pensylvanica the proximal pair of lateral veins clearly arise above the junction of blade and petiole. The extremes of P . pensylvanica frequently are found where the ranges of the two species approach or overlap. Examples of these intermediates are from Gila, Mohave, and Yuma counties, Arizona. A mixed collection from Rock Springs, Gila County, Arizona, suggests that the two species occasionally grow together.

 

어휘

ledge: a narrow flat surface or shelf; especially : one that projects from a wall of rock

talus: 사면

 

 

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서양물통이 종자 퍼온 사진

 

 

 

 

 

 

 

출처:

https://plants.usda.gov/java/largeImage?imageID=pape5_004_ahp.tif