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| Note 1
Phylum Hepatophyta -- liverworts
In central Texas, large liverworts are fairly common on moist, rocky slopes, on moist tree-trunks, and on boulders in shallow streams. Smaller liverworts are common on soil and tree-trunks.
Phylum Bryophyta -- mosses or "true mosses"
In central Texas, true mosses are very often found in a wide variety of habitats, including soil, rocks and trees.
Textbooks sometimes give an impression that mosses require constant moisture. This is an example of a pernicious, geographic bias in biological literature. Many Texas mosses are adapted to xeric environments as well as to mesic ones.
Phylum Anthocerotophyta -- hornworts
In central Texas, hornworts can often be recognized (with a little practice) as resembling a drop of dark green grease. When the sporophytes ("horns") are present, their appearance is unmistakable.
|Ladies Women Handbag Black Messenger JAGENIE Crossbody Silver Travel Shoulder Bag Fashion Purse Tote Note 4||Phylum Psilophyta (or Psilotophyta) -- whisk fern
Psilophyta comprises only two extant genera, Psilotum and Travel Bag Shoulder Purse Messenger Crossbody Silver Handbag Fashion Black JAGENIE Women Tote Ladies Tmesipteris. Psilotum occurs in many places around the world (including south Texas) while Tmesipteris is known only from tropical Asia. In central Texas, Crossbody Purse JAGENIE Black Fashion Handbag Tote Messenger Women Shoulder Bag Silver Ladies Travel Psilotum growing outdoors will survive our mild winters, but not our harsh ones.
Phylum Sphenophyta -- sphenophytes or horsetailsRuffle Bridal red LY6682 Clutch Prom Bag Evening R Diamond red Party SODIAL Envelope Ladies BwHt6Yqx
Stems of Equisetum contain deposits of silicon dioxide (glass) which render them unpalatable and strong. They also can be abrasive; hence their occasional use as scouring devices for dishwashing and as files for fingernails.
Messenger Purse Fashion Crossbody Shoulder Handbag Tote Bag Silver Women Ladies Travel JAGENIE Black Equisetum spores have curious arm-like structures called elaters, which twist and turn in response to humidity changes. These elaters are thought to help effect spore dispersal.
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Phylum Lycophyta (or Lycopodophyta) -- club mosses or ground pines or lycopods
LycopodiumMen’s Black Mini Tommy Crossover Shoulder Th Hilfiger City Bag PCqvCx7w is homosporous--all spores are roughly equal in size. Selaginella and Isoetes are heterosporous--spores are of two distinct sizes, microspores and megaspores.
Phylum Pterophyta (or Pteridophyta or Filicinophyta) -- ferns or "true ferns"
Fern gametophytes provide students with an excellent opportunity to observe living egg and sperm cells of plants. Most gametophytes, when kept moist, will produce large numbers of gametangia (sex organs) which can be seen easily with a light microscope.
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Phylum Coniferophyta (or Pinophyta) -- conifers
Purse Women Crossbody Ladies Messenger Handbag Silver Bag Tote JAGENIE Travel Fashion Shoulder Black Conifers are heterosporous and, in addition, produce highly specialized, complex reproductive and dispersal structures called seeds. Conifer seeds are said to be "naked" since they lack a particular sort of protective covering characteristic of Anthophyta. Coniferophyta are therefore said to be "gymnospermous."
Phylum Cycadophyta -- cycads
Cycads are heterosporous and, in addition, produce highly specialized, complex reproductive and dispersal structures called seeds. Cycad seeds are said to be "naked" since they lack a particular sort of protective covering characteristic of Anthophyta. Cycadophyta are therefore said to be "gymnospermous."Bag Clutch Elegant NBWE Handbag Purse Ladies Handbag Diamante Colorful Wedding Bridal Bridal Evening Party Small Clutch Crossbody rYw4w6dq
JAGENIE Handbag Fashion Purse Messenger Crossbody Tote Travel Shoulder Women Silver Ladies Bag Black Phylum Ginkgophyta -- ginkgo
Ginkgophyta is heterosporous and, in addition, produce highly specialized, complex reproductive and dispersal structures called seeds. Ginkgo seeds are said to be "naked" since they lack a particular sort of protective covering characteristic of Anthophyta. Ginkgophyta are therefore said to be "gymnospermous".
Black JAGENIE Messenger Handbag Ladies Women Tote Crossbody Purse Travel Silver Shoulder Bag Fashion Phylum Gnetophyta -- gnetophytes
Gnetophyta is heterosporous and, in addition, produce highly specialized, complex reproductive and dispersal structures called seeds. Gnetophyta seeds are said to be "naked" since they lack a particular sort of protective covering characteristic of Anthophyta. Gnetophyta are therefore said to be "gymnospermous."
Phylum Anthophyta (or Magnoliophyta or Angiospermophyta) -- flowering plants
Almost all human food is directly or indirectly derived from flowering plants. Flowering plants directly or indirectly provide most fuel, building materials, medicines and clothing. Our species, and most other terrestrial species, depend upon them utterly.
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