pisil of.
cleistogamic flowers.
pollen-grains.
-- Bowii.
-- compressa.
-- corniculata.
-- Deppei.
-- hedysaroides.
-- homostyled species.
-- incarnata.
-- Regnelli.
-- rosea.
-- (Biophytum) sensitiva.
stigma.
-- speciosa.
-- stricta.
-- tropaeoloides.
-- Valdiviana.
Oxlip, the Bardfield.
--, the common.
differences in structure and function between the two parent-species.
effects of crossing.
a hybrid between the cowslip and primrose.
Oxybaphus.
Paeony, pollen-grains of.
Parallelism between illegitimate and hybrid fertilisation.
Pavonia.
Phlox Hentzii.
-- nivalis.
-- subulata.
Planchon on Linum salsoloides.
L. Lewisii.
on Hugonia.
Plantago lanceolata.
-- media.
Polemoniaceae.
Pollen-grains, relative diameter of.
Polyanthus.
Polygonaceae.
Polygonum bistorta.
-- fagopyrum.
pollen-grains.
Pontederia.
pollen-grains.
size of anthers.
-- cordata.
Posoqueria fragrans.
Primrose, the common.
Primula, the, heterostyled species of.
summary on.
homostyled species.
-- auricula.
-- equal-styled varieties.
-- cortusoides.
-- elata.
-- elatior, Jacq.
relative fertility of the two forms.
not a hybrid.
equal-styled var. of.
-- farinosa.
equal-styled var.
-- hirsuta.
-- involucrata.
-- longiflora.
-- mollis.
-- Scotica.
-- Sibirica.
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