Species, Variety, Cultivar

Groups

  • Angiosperms: Flowering plants
  • Gymnosperms: Conifers, cycads, allies
  • Pteridophytes: Ferns
  • Bryophytes: Mosses and liverworts
  • Families:

  • Currently 642 families
  • Genus:

  • Currently 17,020
  • Group of related plants
  • Origin, type, group
  • Species:

  • Genus name + specific feature that makes it different than other plants in Genus
  • Breeds true from seeds or cloning
  • The largest group in which two parents can create fertile offspring
  • Variety:

  • Usually occurs in nature and have same characteristics of parents
  • Seeds from varieties usually have same characteristics
  • Always written in lower case
  • Hybrid:

  • Crosses between species or different parentage in the species
  • Seeds rarely breed true
  • Cultivar:

  • Cultivated variety, created by humans. Some are mutations, some are hybrids of two plants.
  • Seeds don’t usually breed true, propagation by cloning is needed ( from cuttings, tissue culture )
  • First letter of a cultivar is capitalized
  • Heirloom:

  • Varieties found in nature for at least 50 years
  • The Plant List on going list of all known plant species

    Invading lizards from Cuba

    Cuban brown anole have been moving in and pushing the native green anoles out. If you see any take a few minutes to fill out the survey for the SW Center for Herpetological Research (link below)

    Houston Arboretum, A new lizard in town

    Southwestern Center for Herpetological Research, Survey on sitings of Cuban Brown Anole

    The Green Anole, Your Resident Backyard Lizard, Is Being Pushed Out By Its Uglier Cousin

    Giant tree forests need 59″ rain per year to form

    source

    Tree canopies come in two main heights ~82′ and 131′. They form in tropical and temperate regions but only if the yearly rainfall is consistently 59″ or more


    Rainforests are among the most charismatic as well as the most endangered ecosystems of the world. However, whereas the effects of climate change on tropical forests resilience is a focus of intense research,the conditions for their equally impressive temperate counterparts remain poorly understood,and it remains unclear whether tropical and temperate rainforests have fundamental similarities or not.Here we use new global data from high precision laser altimetry equipment on satellites to reveal for the first time that across climate zones ‘giant forests’ are a distinct and universal phenomenon, reflected in a separate mode of canopy height (~40m) world-wide. Occurrence of these giant forests (cut-off height > 25 m) is negatively correlated to variability in rainfall and temperature. We also demonstrate that their distribution is sharply limited to situations with a mean annual precipitation above a threshold of 1500 mm that is surprisingly universal across tropical and temperate climates. The total area with such precipitation levels is projected to increase by ~4 million km2globally. Our results thus imply that strategic management could in principle facilitate the expansion of giant forests, securing critically endangered biodiversity as well as carbon storage in selected regions

    A Global Climate Niche forGiant Trees

    Medicinal plant map of US 1932

    Medicinal plant map of the United States of America. Published by the National Wholesale Druggists’ Association

    The David Rumsey Map Collection has made this map, small version shown, available in many sizes, spend some time wandering around the Extra-extra large one on their site.

    If you browse the collections you’ll find several maps of trees, forests, agriculture, climate, and things of interest for gardeners and non-gardeners.

    Kosmik Kaktus ?

    idk?

    When ever I go to a home warehouse store I wander through the plant section. Sometimes I get lucky. These caught my eye. How could you miss those colors?

    I tried to find information on the company but all I could find were blog and forum entries. If you look closely at the turquoise blue one front and center it appears the newer part of the leaves are growing out green. I’m guessing the plants are just painted? idk?

    Kosmic Kaktus has been trademarked by Altman Plants in Calif

    If you like these, why not? I’ve certainly done worse things to plants over the years. Might be a fun way to horrify your neighbors?