GenetixBayEST. 2009
Glossary · Plant biology

Staminate flower

A male flower that carries stamens (anthers on filaments) and no functional pistil; in cannabis, five drooping sepals around five pollen-shedding anthers.

Also written male flowermale flowersstaminate flowersmale pollen flower

EstablishedDraft: awaiting expert reviewUpdated

A staminate flower is a male flower: it has stamens and no functional pistil. A male cannabis flower is a small pendulous bud with five sepals (tepals) that open to expose five anthers on short filaments. The anthers split and release fine, wind-carried pollen.

In practice

On a male plant, staminate flowers appear in loose clusters (panicles), often earlier than females show. Closed male flowers look like small balls on a short stalk, with no stigmas. They begin shedding pollen roughly 1-3 weeks after first appearing.

Growers producing seedless flower remove males as soon as they are identified. Breeders keep the best ones. House position: males are a necessity in breeding, and GenetixBay encourages and rewards keeping and documenting good males in the Stud Book.

Staminate flowers or exposed anthers on a female plant mean an intersex (hermaphrodite) plant, which should be culled and not bred from.

Don't confuse with

  • Pistillate flower: the female flower with stigmas.
  • Anther: the pollen-bearing part of the stamen.
  • Pre-flower: the first flower at a node, either sex.

Related terms

Sources

  1. Spitzer-Rimon B, Duchin S, Bernstein N, Kamenetsky R. 2019. Architecture and florogenesis in female Cannabis sativa plants. Frontiers in Plant Science 10:350. doi.org/10.3389/fpls.2019.00350
  2. Small E. 2015. Evolution and classification of Cannabis sativa (marijuana, hemp) in relation to human utilization. The Botanical Review 81:189-294. doi.org/10.1007/s12229-015-9157-3
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