#monoecious

[stroopwaffelz]

oc stuff for my webseries

[hleavesk]

America's Love of Male Trees Could Be Why You're Sneezing Right Now

One researcher calls it "botanical sexism."

never did i know about these

(source: atlasobscura.com | may 2019)

Male trees are one of the most significant reasons why allergies have gotten so bad for citydwellers in recent decades. They’re indiscriminate, spewing their gametes in every direction. They can’t help it—it’s what evolution built them for. This is fine in the wild, where female trees trap pollen to fertilize their seeds. But urban forestry is dominated by male trees, so cities are coated in their pollen. Tom Ogren, horticulturalist and author of Allergy-Free Gardening: The Revolutionary Guide to Healthy Landscaping, was the first to link exacerbated allergies with urban planting policy, which he calls “botanical sexism.”

In trees, sex exists beyond the binary of female and male. Some, such as cedar, mulberry, and ash trees, are dioecious, meaning each plant is distinctly female or male. Others, such as oak, pine, and fig trees are monoecious, meaning they have male and female flowers on the same plant. It’s easy to identify female trees or parts—they’re the ones with seeds. And yet more, such as hazelnut and apple trees, produce “perfect” flowers that contain male and female parts within a single blossom.

[seedkeeping]

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Pollen from the Winterspinat Haldenstein, shaken loose in slo-mo. Like asparagus, yams, kiwis, pawpaws, papayas, and hops, spinach plants are dioecious (“two houses”) meaning male and female flowers are on separate plants. Some plants, like squash and corn, are monoecious (“one house”), with separate male and female flowers on the same plant. However, as far as I know, the vast majority of plant species are hermaphroditic with perfect flowers that contain male and female parts that can self-pollinate. #winterspinathaldenstein #winterspinach #spinachpollen #pollen #dioecious #monoecious #hermaphroditic #plantsex #flowermorphology #heirloomspinach #seedkeeping #seedsaving

[treetyoself]

(3/28/18)

Usually in the middle of spring, male cones on Virginia pines (Pinus virginiana) start to appear and are later followed by female cones. When an individual has both male and female reproductive systems, they are called monoecious (a characteristic that all pines share).

Sources: arnoldia.arboretum.harvard.edu (great for pine identification), uky.edu, forestry.ohiodnr.gov

[seedkeeping]

Spinach plants are mostly dioecious, meaning there are separate male and female plants, except for occasional individuals that are both. This here is a female (I think) Winterspinat Haldenstein plant that is going to flower after several months in the hoop house. Soon, it will develop pointed seeds. Haldenstein is the Swiss town where this variety has been grown by nearly all who live there since before WWI. The seeds were given to me by William Woys Weaver. #winterspinathaldenstein #spinaciaoleracea #dioecious #monoecious #spinachflower #swissheirloom (at Newtown Square, Pennsylvania)

[somepinkflowers]

{{ #pollen pollen everywhere 🌳 This is the #maleflower of the #sweetgum tree 🌳 }} #somepinkflowers 🌸 About 2” long these little clusters of pollen balls stick up high above the female sweetgum flower which eventually produces those spikey sweetgum balls 🌳 Sweetgum trees are #monoecious which means each sweetgum tree has everything it needs right there to make seed pods without looking for a mate. 💕 👋🏽😊🌳💕 #ilovenature 🌳🌳 Luna & other fabulous moths like to place their eggs on a sweetgum leaf so I’m please I have 2 trees 🌳🌳 growing in my back yard. 🌳 I know some of you are still playing in the snow ❄️ but down here even tho #winterinflorida is happening we also have spring. 🌸 Its how we roll in Florida. 🌱🌱🌸🌳 (at St. Augustine, Florida) https://www.instagram.com/p/CL-eiNEAQJD/?igshid=197a5d62sdtp3

[quonsethuthemp]

[menikmati]

Mézgás éger #alnusglutinosa #commonalder #maleandfemale #monoecious #gametophyte https://www.instagram.com/p/BpMNj47Fiq1/?utm_source=ig_tumblr_share&igshid=4ua77l9v4zg4