Chenopodium album group - chiave alle specie del gruppo

confronti fra specie simili e chiavi dicotomiche
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Franco Giordana
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Chenopodium album group - chiave alle specie del gruppo

Messaggio da Franco Giordana » 07 feb 2017, 16:28

http://www.actaplantarum.org/floraitali ... 36#p599335

Questa la chiave pubblicata da SUKHORUKOV & KUSHUNINA (Phytotaxa 191(1): 10-44. 2014)


1. Plant robust, up to 2.5 m tall; inflorescence whitish due to presence of bladder hairs on the branches and flower perianth; young
leaves often reddish; mature leaves up to 25(−30) cm long ................................................................... ................. 5. C. bengalensis
- Plant 15–60(−100) cm; leaves smaller, and, like the inflorescence, green ....................................................................................... 2
2. All or at least middle and upper leaves lobate with the terminal lobe ca. twice as long as the lateral ones ..................................... 3
- Leaves without lobes, or the apical lobe slightly or not larger than lateral ones ……...........................................................……... 4
3. Light green plant growing at elevations up to 2200 m; leaves cuneate at base; all or almost all leaves lobate, middle-lobe with ±
parallel margins; pericarp when dry with reticulate ultrasculpture, long-papillate in fresh fruits or after soaking; seeds with indistinct
keel....................................................................................................................................................................... 1. C. ficifolium
- Plant dark green, at elevations 2000–3800 m; leaves truncate or slightly cuneate; lower leaves triangular, without lobes, middle
and upper leaves lobate, middle-lobe gradually tapering; pericarp almost smooth when dry, with minute papillae in fresh fruits or
after soaking; seeds with distinct keel ................................................................................ .............................................. 6. C. perttii
4. Leaves mostly entire, rhombic or slightly trilobate with indistinct lateral lobes................................................................ 4. C. karoi
- At least lower leaves dentate, rarely entire, but in latter case triangular or lanceolate ……............................................................. 5
5. Leaves rhombic to lanceolate, long-petiolate, not fleshy, dorsally green or greyish..................................................... ... 2. C. album
- Leaves fleshy, oblong, short-petiolate (petioles to 1 cm), dorsally gray ...................................................................... 3. C. pallidum

Inoltre, SUKHORUKOV, da me interpellato, mi ha detto che non ha mai notato forme di transizione e che i caratteri del bengalense sono stabili, INCLUSI I SEMI CARENATI!!!!!
Infine nel lavoro si dice che è coltivato come verdura in Nepal (non so in quali altri paesi), ma molto localmente.
Aiutate i moderatori: riportate correttamente i dati! Leggete come fare qui e quiQuesto è il mio primo messaggio in forum: http://www.actaplantarum.org/floraitali ... php?t=1805 e i dati??? Nessuno nasce imparato!daily msgs

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