https://www.e-kjpt.org/journal/view.php?number=4918

가는잎개별꽃 (Pseudostellaria sylvatica (Maxim.) Pax ex Pax & Hoffm.)
개별꽃 (Pseudostellaria heterophylla (Miq.) Pax ex Pax & Hoffm.)
긴개별꽃 (Pseudostellaria japonica Pax)
덩굴개별꽃 (Pseudostellaria davidii (Franch.) Pax ex Pax & Hoffm.)
덩이뿌리개별꽃 (Pseudostellaria bulbosa (Nakai) Nakai)
보현개별꽃 (Pseudostellaria davidii x palibiniana K.Choi & J.H.Pak)
비슬개별꽃 (Pseudostellaria heterophylla x palibiniana K.Choi & J.H.Pak)
산개별꽃 (Pseudostellaria monantha Ohwi)
숲개별꽃 (Pseudostellaria setulosa Ohwi)
애기개별꽃 (Pseudostellaria baekdusanensis M. Kim)
지리산개별꽃 (Pseudostellaria okamotoi Ohwi)
참개별꽃 (Pseudostellaria coreana (Nakai) Ohwi)
큰개별꽃 (Pseudostellaria palibiniana (Takeda) Ohwi)

 

1. 상부 잎은 대생하며, 크기와 모양이 나머지 잎과 비슷하다.

2. 개화 후에도 직립한다.

3. 잎은 침형 또는 선상피침형이다. ····················································································································· 1. P. sylvatica (가는잎개별꽃)

3. 잎은 피침형, 난상피침형, 난형이다.

4. 엽연과 잎이면 중륵에 털이 있다. ········································································································· 2. P. japonica 긴개별꽃

4. 잎 기부에만 털이 있다. ······················································································································ 3. P. baekdusanensis 애기개별꽃

2. 개화 후에 덩굴성이 된다.

5. 원줄기의 잎과 엽액에서 분지된 줄기의 잎이 동형(난형)이며, 종자가 결실한다. ································· 4. P. davidii 덩굴개별꽃

5. 원줄기의 잎과 엽액에서 분지된 줄기의 잎이 이형이며, 종자가 결실되지 않는다.

6. 소화경이 2 cm 이상이다. ····································································································· 9. P. × bohyeonsanensis

6. 소화경이 2 cm 미만이다. ······································································································· 11. P. × seoraksanensis

1. 상부 잎은 위윤생하며, 나머지 잎에 비해 가장 크다.

7. 지하경이 있다. ························································································································································· 7. P. setulosa

7. 지하경이 없다.

8. 소화경 전체에 털이 있다. 꽃은 (1)2–5(8)개 핀다. ······················································································ 8. P. heterophylla 개별꽃

8. 소화경에 털이 없거나 1–2줄 있다. 꽃은 한개만 핀다.

9. 결실기 소화경은 3.5 cm 이상이고, 결실기에 줄기 기부로 길어져 굽는다. ······························································ 5. P. okamotoi

9. 결실기 소화경은 3.5 cm 미만이고, 결실기에 줄기 기부로 길어지지 않는다.

10. 종자가 결실되지 않는다. 지상부 줄기는 하나이고, 소화경에 털이 1줄이다 ················································· 10. P. × biseulsanensis

10. 종자가 결실된다. 지상부 줄기는 1–17개이고, 소화경에 털이 없거나 1–2줄이다.

11. 삭과의 종자수는 5개 이상이다. 결실기 소화경 길이는 1.3–2.8 cm이다. ··············································· 6. P. palibiniana

11. 삭과의 종자수는 1–4개이다. 결실기 소화경 길이는 2.3–3.4 cm이다. ·········································· 12. P. × segeolsanensis