Passiflora section Elkea

Esquerre-Ibañez, Boris, 2015, A new species of Passiflora supersection Tacsonia (Passifloraceae) from Amazonas, Northern Peru, Phytotaxa 202 (4), pp. 266-272 : 267

Key to the species of Passiflora section Elkea from Northern Peru

1. Leaves 3-foliate, flowers pendent …………………................................................................. …………….… P. huamachucoensis

- Leaves 3-lobed, flowers horizontal or pendent…………… ..............................................................……………………………..2.

2. Flowers horizontal, spheroidal perianth at anthesis ……………… ................................................................ ….… P. anastomosans

- Flowers pendent, not spheroidal perianth at anthesis………………..............................................................……………………. 3.

3. Perianth reflexed at anthesis, hypanthium green throughout................... ...................................................................... P.tarminiana

- Perianth not reflexed at anthesis, hypanthium green or colored.......................................................................................................4.

4. Peduncles 11–13.2 cm, hypanthium generally green throughout. ………….................................................................. P. kuethiana

- Peduncles less than 11 cm, hypanthium greenish with red, pink, violet or purple ….................................................................…. 5.

5. Relatively small leaves, 2–5 × 3–7 cm ............................................................................................................................................ 6.

- Relatively big leaves, 4.5–17 × 3.5–25 cm ……………… ..............................................................……………………………....7.

6. Hypanthium 6–9 cm long, pink to reddish or purplish ……................................................................. ……………..… P. parvifolia

- Hypanthium 3–5 cm long, violet ……………… ...............................................................……………………….….. P. glaberrima

7. Hypanthium pubescent, 7–12 cm long, stipules reniform ……................................................................. ………….…. P. tripartita

- Hypanthium glabrous or sparsely pubescent, 5–13 cm, stipules subreniform to obliquely ovate … .............................................. 8.

8. Stipules subreniform,glandular-serrate, hypanthium glabrous up to 13 cm long ........................................................ P.cumbalensis

- Stipules obliquely ovate, lacerate, hypanthium glabrous or sparsely pubescent (rarely) up to 8.2 cm long ........................... P. runa