Most flowers of the Crossosomatales are usually solitary, with often 4-5 sepals and petals. The base of the calyxWhat is calyx?A collective term for all the sepals of a flower; the lowermost whorl of floral orgrans (Plural form is calyces)., corollaWhat is corolla?A collective term referring to the petals of a flower., and the stamens are joined into a floral cup. The outer sepals are smaller than the inner ones. The flowers have well-developed nectaries. The hypanthium is present. Some flowers, however, lack hypanthium.
Crossosomataceae (4 genera and 12 species) plants are bisexual, andromonoeciousWhat is andromonoecious?A plant with staminate and perfect flowers, but missing pistillate flowers., gynomonoecious, or polygamomonoecious. A few flowers are unisexual. The flowers are regular, medium-sized, and solitary (terminal or axillary). The flowers have free hypanthium. The flowers of the Crossosomataceae have distinct calyx and corolla. There are usually 4-5 regular, persistent, and imbricateWhat is imbricate?overlap or cause to overlap; in botany terms, scales, sepals, or plates having adjacent edges overlapping; with margins of structures overlapping like shingles on a roof. sepals in the 1-whorled calyx. The 1-whorled corolla usually has 4-5 regular, imbricate, clawed, and white petals.
Staphyleaceae plants are hermaphroditeWhat is hermaphrodite?An organism or structure possessing both male and femal reproductive organs; a flower with both stamens and pistils. Other synonyms: bisexual or monoclinous., monoeciousWhat is monoecious?Pertaining to plants, individuals of which bear both staminate and pistillate flowers, but not necessarily perfect flowers., dioeciousWhat is dioecious?Pertaining to plants, individuals of which bear either staminate or pistillate flowers, but not both., or polygamomonoecious. Some species are unisexual. The small, regular, and bracteateWhat is bracteate?Possessing or bearing bracts. flowers are in drooping panicles or racemes. The free hypanthium is absent. There are distinct calyx and corolla in the perianth. The 5 sepals are often petaloid in 1 whorl. The corolla is also 1 whorl with 5 regular and imbricate petals. There are 5 stamens in the androecium. These stamens are isomerous with the perianth. The gynoecium has 2-3 carpels; apocarpous or syncarpousWhat is syncarpous?Flowering having united carpels; Contrast apocarpous.. The stigma is a wet type.
Flowers of Stachyuraceae (1 genus and 7 species) are hermaphrodites or polygamomonoecious. Unisexual flowers are sometimes present. The small and regular flowers exist in pendulous or racemose inflorescences. The flowers are 4-merous. The calyx comprises 4 regular and imbricate sepals in two whorls. The corolla has 4 imbricate and sessile petals. Flowers have no free hypanthium.
The flowers of Strasburgeriaceae (2 genera and 2 species) are all bisexual. The regular flowers are solitary. The calyx and the corolla are distinct in the perianth. The calyx is spiral, and the corolla is whorled. The sepals are 8-10; leathery. The petals are 5; sessile and fleshy. These petals are cream to yellow. The flowers of the Strasburgeriaceae have a circular nectar gland with radiating spikes. The 10 free filaments are also cream to yellow. The carpels of the flowers are 4-7; fused. The style is single, long, and straight. The pollination is by birds.