양치식물문
관속식물 Tracheophyta
양치식물문 Pteridophyta
<과의 인위적 식별
1. 식물체는 땅속에 뿌리가 있다.
2. 잎은 비늘같이 작거나 가늘며 가장지리가 밋밋하지만 물속에서 지라는 것은 좁다.
3. 줄기에 뚜렷한 마디와 능선이 있다 ·····················································································속새과 Equisetaceae
3. 줄기에 마디와 능선이 없다.
4. 육상에서 자란다
5. 잎은 돌기처럼 작고 포자낭은 3 개로 갈라진다 ·································································솔잎란과 Psilotaceae
5. 잎은 비늘 같거나 선형이고 포자낭은 1 방으로 되어 있다.
6. 잎은 나선상으로 배열한다 ···················································································· 석송과 Lycopodiaceae
6. 잎은 4줄로 배열한다 ························································································ 부처손과 Selaginellaceae
4. 물속에서 자라며 부추잎 같은 잎이 총생한다 ······································································물부추과 Isoetaceae
2. 잎은 크고 대개 톱니가 있거나 갈라진다.
7. 잎은 十 자형으로 갈라지지 않는다.
8. 잎은 곧추 자라고 포자낭세포는 여러 층으로 되어 있다 ·············································고사리삼과 Ophioglossaceae
8. 잎은 끝이 풀리면서 자라고 표자낭벽은 1 층 세포로 되어 있다.
9. 환대는 퇴화하였다.
10. 다년생 육상식물이며 잎은 2 회 우상복엽이다 ································································ 고비과 Osmundaceae
10. 1 년생 수생식물이며 나엽은
2-3 회, 실엽은 3-4 회 우상복엽이다 ·············· 물고사리과 Parkeriaceae ·······71. 물고사리
9. 환대는
발달하였다.
11. 줄기는
덩굴성이거나 곧추 자란다.
12. 덩굴성이다 ································································ 실고사리과 Schizaeaceae ··············38. 실고사리
12. 줄기는
곧추 자라고 잎은 2 개씩 갈라진다 ···························································풀고사리과 Gleicheniaceae
11. 줄기는
땅속이나 지면으로 벋어간다.
13. 잎은
이끼처럼 얇고 기공이 없다 ····································································처녀이끼과 Hymenophyllaceae
13. 잎은
두껍다.
14. 식물체에
털이나 인편이 없고 나엽과 실엽이 있으며 포자낭은 뒤로 말린 잎으로 덮인다 ·························꿩고사리과 Plagiogyriaceae
14. 식물체에
털 또는 인펀이 있거나 두 가지 모두 있다.
15. 포자낭군은
잎 가장자리에 달리거나 잎 가장자리에 덮여 있다 ······································고사리과 Pteridaceae
15. 포자낭군은
잎 뒷면에 달린다.
16. 포막이
있다.
17. 포자낭군은
길며 주맥과 나란히 달린다 ······················································ 새깃아재비과 Blechnaceae
17. 포자낭군은
긴 것이라도 주맥과 나란히 달리지 않는다.
18. 잎자루와 우편은 잎과의 사이에 마디가 있다 ············································· 넉줄고사리과 Davalliaceae
18. 잎자루와 우편은 잎과의 사이에 마디가 없다.
19. 인편에 창살 같은 무늬가 나타나지 않는다 ··················································· 면마과 Aspidiaceae
19. 인편에 창살 같은 무늬가 나타난다 ·················································· 꼬리고사리과 Aspleniaceae
16. 포막이
없다.
20. 표피중에
바늘 같은 세포가 없다 ······························································· 고란초과 Polypodiaceae
20. 표피중애
바늘 같은 세포가 있다 ·························································· 일엽아재비과 Vittariaceae
7. 4개의 잎이十자형으로 배열하며 물에서 자란다 ··········································네가래과 Marsileaceae ·········222. 네가래
1. 식물체는 물 위에 떠 있다 ·································································································생이가래과 Salviniaceae
