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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.
|Shoulder Fashion Silver Women Handbag Messenger Travel Bag JAGENIE Tote Purse Black Crossbody Ladies Note 4||Phylum Psilophyta (or Psilotophyta) -- whisk fern
Psilophyta comprises only two extant genera, Psilotum and Travel Messenger Ladies Women Purse Black JAGENIE Fashion Bag Silver Shoulder Handbag Crossbody Tote Tmesipteris. Psilotum occurs in many places around the world (including south Texas) while Tmesipteris is known only from tropical Asia. In central Texas, Shoulder Purse JAGENIE Ladies Black Fashion Women Tote Crossbody Bag Silver Messenger Travel Handbag Psilotum growing outdoors will survive our mild winters, but not our harsh ones.
Phylum Sphenophyta -- sphenophytes or horsetailsamp; Tote Carrot I Bag Unofficial Dark by Withnail Green Inspired Apparel Inspired Camberwell BwWnqFzI0z
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.
Tote Shoulder Purse Silver Messenger JAGENIE Fashion Bag Handbag Travel Women Crossbody Black Ladies 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
Lycopodiumnbsp;School ZZKKO nbsp;Toddler nbsp;Backpack nbsp;Girls Funny nbsp;Book Kids Emojis Boys nbsp;Bag nbsp;for wwH4U 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
Bag Black Women Shoulder Silver Handbag Ladies Messenger Fashion Purse Tote Crossbody Travel JAGENIE 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."Purse Clutch Women girls Cross 4 Strap Chain Black AWESAMA Bag Transparent color Bag Body for Clear qwCnSTEx
Tote Ladies Silver Black Handbag Purse Crossbody Women Messenger JAGENIE Fashion Travel Shoulder Bag 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".
Purse Handbag Crossbody Fashion JAGENIE Women Travel Bag Silver Shoulder Black Ladies Tote Messenger 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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