Zinnia revoluta.
Helianthus sp.!
Spilanthes oleracea.
Dahlia.
*Leontodon Taraxacum!
Senecio Doria.
Cichorium Intybus.
Lactuca sativa.
Anthemis retusa.
*Campanula medium!
persicifolia.
Azalea indica!
Vinca minor.
Atropa Belladonna.
*Solanum Lycopersicum!
*Petunia violacea!
Galeopsis ochroleuca.
Betonica alopecuros.
*Digitalis purpurea!
*Antirrhinum majus!
*Linaria purpurea!
*Pedicularis sylvatica!
*Calceolaria var. hort.!
Scrophularia nodosa.
Salpiglossis straminea.
Streptocarpus Rexii.
*Gesnera var. hort.!
AEschynanthus sp.!
Thyrsacanthus rutilans!
Anagallis collina.
*Primula veris!
Auricula.
*Primula acaulis, var. umbellata!
elatior?
* sinensis!
Aristolochia Clematitis.
Blitum sp.
Chenopodium sp.
Rumex sp.
Salix cinerea.
*Hyacinthus orientalis!
Lilium bulbiferum!
croceum, et sp. alix, pl.
Tulipa, sp.
Polygonatum anceps.
Fritillaria imperalis!
Agave americana.
Iris versicolor.
sambucina.
Crocus, sp.
Colchicum autumnale.
Narcissus incomparabilis!
Tazetta.
biflorus.
chrysanthus.
*Ophrys aranifera!
Calanthe vestita!
Oncidium bicolor.
ornithorhyncum.
&c. &c.

In addition to the works before cited, additional information
on this subject may be gained from the following:--Jaeger,
'Missbilld.,' p. 92. v. Schlechtend, 'Bot. Zeit.,' 1856,
_Robinia_. Weber, 'Verhandl. Nat. Hist. Vereins. Preuss.
Rheinl.,' 1849, p. 290, _Primula_. Hincks, 'Rep. Brit. Assoc.
Newcastle,' 1838, _Salpiglossis_. Clos, 'Mem. Acad. Toulouse,'
vol. vi, 1862, _Anagallis_. Wigand, 'Flora,' 1856, tab. 8,
_Pedicularis_. Henfrey, 'Botan. Gazette,' i, p. 280, _Reseda_.
P. Reinsch, 'Flora,' 1860, tab. 7, _Petasites_. Weber,
Verhandl. Nat. Hist. Vereins. f.d. Preuss. Rheinl. u.
Westphal.,' 1860, p. 332, tabs. 6 et 7, _Prunus_, _Persica_,
_Campanula_, _Taraxacum_, _Saxifraga_, _Silene_, _Hyacinthus_,
_&c._ Miquel, 'Linnaea,' xi, p. 423, _Colchicum_. Michel,
'Traite du Citronnier,' tab. 6, _Citrus_.

=Syncarpy.=--In the preceding section it has been shown that the
carpels, like other parts of the flower, are subject to be united
together. This union may either take place between the carpels of a
single flower or between the pistils of different flowers. In the latter
case the other floral whor