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Cucurbita moschata is a species originating in the tropical Americas [2] which is cultivated for edible flesh, flowers, greens, and seeds. [3] It includes cultivars known in English as squash or pumpkin. Cultivars of C. moschata are generally more tolerant of hot, humid weather than squash of other domesticated species.
[9] [10] Female flowers have thick pedicels, and an inferior ovary with 3–5 stigmas that each have two lobes. [8] [11] The female flowers of C. argyrosperma and C. ficifolia have larger corollas than the male flowers. [8] Female flowers of C. pepo have a small calyx, but the calyx of C. moschata male flowers is comparatively short. [8]
[16] [17] A 1989 study on the origins and development of C. pepo suggested that the original wild specimen was a small round fruit and that the modern pumpkin is its direct descendant. This investigation proposed that the crookneck, ornamental gourd, and scallop are early variants, and that the acorn is a cross between the scallop and pumpkin. [8]
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Flowers that bear a gynoecium but no stamens are called pistillate or carpellate. Flowers lacking a gynoecium are called staminate. The gynoecium is often referred to as female because it gives rise to female (egg-producing) gametophytes; however, strictly speaking sporophytes do not have a sex, only gametophytes do. [1]
The plants in this family are grown around the tropics and in temperate areas of the world, where those with edible fruits were among the earliest cultivated plants in both the Old and New Worlds. The family Cucurbitaceae ranks among the highest of plant families for number and percentage of species used as human food. [5]
Close-up of a Schlumbergera flower, showing part of the gynoecium (specifically the stigma and part of the style) and the stamens that surround it. Plant reproductive morphology is the study of the physical form and structure (the morphology) of those parts of plants directly or indirectly concerned with sexual reproduction.