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Carpel
Leaflike structure that encloses one or more ovules
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Locule
Cavity within a sporangium or ovary in which ovules occur
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Pedicel
The stalk of an individual flower in an infolrescence
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Peduncle
The stalk of a solitary flower or of an inflorescence
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Perianth
sepals and petals together
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Corolla
Collective name of petals
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Receptacle
Enlarged end of flower stalk that sepals, petals, stamens, and carpels attach
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Calyx
Collective name of sepals
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Complete flower
Has all 4 floral parts (sepal, petal, stamen, carpel)
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Incomplete flower
Missing one of the four floral parts
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Perfect Flower
One flower has both stamens and pistils (bisexual)
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Imperfect Flower
Flower that is lacking either stamens or pistils (unisexual)
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Axile placentation
Placentae arrange around central column of tissue, equal amount of locules and carpels
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Parietal placentation
Placentae borne upon the ovary wall, ovary not divided into locules
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Free central placentation
Placentae borne on a central collumn NOT connected by partitions with the ovary wall
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Basal placentation
Placentae at the very base of unilocular ovary (long. section picture)
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Rhizoid
Root-like hairs eminating from the base of the prothallus (Pteridophyta)
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Zygospores
Thick walled zygote of Spirogyra
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Rhizome
Horizontal stem found in Lycopodiophyta
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Thallus
Unspecialized body (no stems, roots, leaves) of bryophytes
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Calyptra
(from archegonium) protects developing capsule in Bryophyta
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Peristome
"ring of teeth" that distributes spores in response to moisture changes (Bryophyta)
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Homosporous
One type of spore produced by sporophyte. Can produce bisexual gametophytes (2 gametangia on single gametophyte)
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Heterosporous
- Two types of spores produced by DIFFERENT sporangia. All seed plants, some ferns/lycophytes
- (megaspores/microspores)
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micro/megasporangium
Diploid tissue containing micro/megasporocytes (micro/megaspore mother cells). Seed plants
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Tinsel (ornamental) and Whiplash (shorter and smooth)
The two flagella characteristic of heterokonts
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frustules
Walls of diatoms, made from silica
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Algin
Intercellular material of kelp (Lamnaria)
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Phycobilins
Pigment of rhodophyta
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Floridean starch
storage material of rhodophyta
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