Adiantum raddianum (2)

 

Adiantum raddianum (3)

https://daehyo49.tistory.com/7817327

Adiantum raddianum (2)

https://daehyo49.tistory.com/7817324

Adiantum raddianum (1)

https://daehyo49.tistory.com/7814415

 

학명 : Adiantum raddianum C.Presl.

분류 : (우리나라)공작고사리과(Adiantaceae)/(FOC)봉의꼬리과(Pteridaceae)

학명 풀이 :

Adiantum : From the Latin for unwetted; referring to to the water-repellant petals

raddianum : Named in honour of Guiseppe Raddi (1770–1829), Italian botanist at Florence, who collected in Brazil on the Austrian Expedition (1817–1818).

영명 : Delta maidenhair fern

 

 

 

 

사진 : 2025.01.22 황학산수목원

 

 

 

 

 

 

 

사진 : 2025.11.04 황학산수목원

 

 

 

 

 

 

 

 

Description

 

Rhizomes short-creeping, up to 100 mm long (in herbarium specimens), 2–3.5 mm diameter, with stipes closely inserted; bearing scales; stolons and tubers absent. Rhizome scales narrowly ovate, 1–2.5 mm long, 0.2–0.4 mm wide, orange-brown, concolorous. Fronds 125–680 mm long. Stipes 45–430 mm long, dark brown, polished, glabrous except for a few scattered scales proximally. Rachises dark brown, sulcate, polished, glabrous. Laminae 3–4-pinnate, or rarely 5-pinnate, ovate or broadly ovate or elliptic, 80–350 mm long, 30–270 mm wide, mid-green on both surfaces, herbaceous, glabrous. 7–10 pairs of divided primary pinnae below pinnate apex, widely spaced especially proximally, ovate; the longest at or near the base, 25–155 mm long, 12–85 mm wide, apices acute or obtuse, bases stalked, divided into secondary pinnae. 2–7 pairs of secondary pinnae on proximal primary pinnae divided into tertiary pinnae; the longest secondary pinnae ovate, 12–55 mm long, 7–38 mm wide, apices obtuse, bases stalked, divided into tertiary and sometimes quaternary segments. Longest ultimate lamina segments flabellate, longer than broad, 4–17 mm long, 2–17 mm wide, apices rounded, often divided into two or more lobes, bases stalked, with stalks attached centrally. Reflexed lamina flaps reniform, glabrous.

 

Recognition

 

Adiantum raddianum is distinguished by its 3–4-pinnate fronds, flabellate ultimate segments with the stalks attached centrally, glabrous rachises and laminae, reniform and glabrous “indusia”, and the green colour of the abaxial lamina surface. It is easily confused with the indigenous A. aethiopicum, but distinguished by its ultimate lamina segments, which are longer than broad, and at least some are more deeply incised than the indusial notches, forming two or more distinct lobes. The ultimate segments in A. aethiopicum are generally broader than long, and entire or shallowly incised, especially at the point of attachment of the “indusia”. There is also a true creeping rhizome in A. raddianum, whereas A. aethiopicum has a more or less erect rhizome with long-creeping stolons.

 

Distribution

North Island: Northland, Auckland, Taranaki, Southern North Island.

South Island: Western Nelson, Sounds-Nelson, Canterbury.

Altitudinal range: 0–200 m.

 

 

 

설명 출처  https://www.nzflora.info/factsheet/Taxon/Adiantum-raddianum.html

 

 

Adiantum raddianum(델타고사리)와 Adiantum capillus-veneris(봉작고사리) 구별

 

Google Gemini의 도움 받음 

구분	Adiantum raddianum (델타고사리)	Adiantum capillus-veneris (봉작고사리)
일반 명칭	델타고사리 (Delta Maidenhair)	봉작고사리 (southern maidenhair fern
잎 갈라짐	3-4회우상 (?)	1-2회우상(중하부 2회우상, 상부 1회우상)
잎 조각 모양	쐐기(삼각형)에 가깝다   잎 끝이 비교적 둥긂	부채꼴 모양 잎 끝 가장자리가 불규칙하게 톱니처럼 더 깊고 날카롭게 갈라져 있다.
엽맥 모양 (?)	잎맥이 비교적 빽빽하고 질서 있음	잎맥이 부채살처럼 퍼지는 형태
자생지 및 내한성	열대 아메리카 원산 (추위에 매우 약함)	한국, 일본 등 온대~열대 (상대적으로 강함)
포자낭군 위치	잎 가장자리의 깊게 패인 홈 안쪽	잎 가장자리의 돌출된 부분 끝
위포막 형태	신형	거의 일자형에 가깝디

 

 

 

 

 

 

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비교를 위해 퍼온 사진들

 

Adiantum raddianum

 

출처 : Wikipedia

 

 

출처 : KEW

 

 

 

 

봉작고사리 퍼온 사진

 

 

 

 

출처 https://www.zimbabweflora.co.zw/speciesdata/image-display.php?species_id=100980&image_id=1

 

 

 

 

봉작고사리 세밀화 (FOC)

 

 

 

 

 

 

봉작고사리외 비슷한 Adiantum bellum과 봉작고사리의 구별(Google Gemini 도움)

 

A. bellum은 봉작고사리보다 훨씬 왜소하여 15~30cm 정도이다. A. bellum은 소엽들이 줄기에 아주 촘촘하고 조밀하게 붙어 있어 전체적으로 빽빽한 느낌을 주고  봉작고사리는 줄기가 길고 잎 조각 사이의 간격이 상대적으로 넓다.

A. bellum은 잎이 약간 더 두껍고 질긴 느낌(약간의 가죽질)이 있으며, 봉작고사리는 아주 얇고 투명한 느낌을 준다

위포막은 둘 다 일자형이다. 

 

 

 

 

 

출처 : https://www.inaturalist.org/taxa/474898-Adiantum-bellum/browse_photos

 

 

 

 

출처:  Kew