The flowering plants of Africa: An analytical key to the genera of African phanerogramsThonner, Franz
Science
The flowering plants of Africa: An analytical key to the genera of African phanerograms
Thonner, Franz
Angiosperms -- Africa; Plants -- Africa
Fruit with many seeds and a sword-shaped beak. Leaves lyrate or
undivided. (See 74.) =Eruca= Lam.
87. (82.) Fruit 1-seeded. 88
Fruit 2-or more-seeded. 91
88. Fruit slightly or not compressed, ovoid, with a crusty rind. Seed
globular. Cotyledons folded; radicle incumbent. Petals white. Filaments
without an appendage. Glands confluent. Radical leaves pinnately
divided. Fruit-stalks spreading-erect.--Species 1. North-west Africa
(Algeria). =Calepina= Adans.
Fruit much compressed. Leaves undivided. 89
89. Sepals petal-like. Petals rose-coloured. Filaments without an
appendage. Glands wanting. Ovary 3-celled. Fruit elliptical. Radicle
accumbent. Shrubs. Leaves entire. (See 20.) =Schlechteria= Bolus
Sepals not petal-like. Glands present. Ovary 2-celled. Herbs or
undershrubs. 90
90. Petals rose-coloured. Longer filaments with a tooth-like appendage.
Median glands wanting. Apex of the style truncate beneath the stigma.
Fruit discoid, winged.--Species 2. North-west Africa (Algeria). Used as
ornamental plants. =Aethionema= R. Br.
Petals yellow. Filaments without an appendage. Median and lateral
glands confluent into a ring. Apex of the style more or less 2-lobed
beneath the stigma. Fruit with 6 longitudinal nerves. Fruit-stalks bent
downwards. (See 59.) =Isatis= L.
91. (87.) Fruit 2-seeded. 92
Fruit 4-or more-seeded. 99
92. Fruit much compressed from the back, oblong, with a soon vanishing
partition and flat, net-veined valves. Seeds horizontal, winged;
radicle accumbent. Lateral sepals saccate. Petals pale-violet. Leaves
pinnatisect.--Species 1. North-east Africa (Egypt). =Ricotia= L.
Fruit compressed from the side, and then with a narrow partition, or
not compressed; partition well developed. 93
93. Fruit distinctly compressed laterally. 94
Fruit not distinctly compressed. 97
94. Fruit moderately compressed, with a lanceolate or elliptical
partition, opening by 2 valves. Seeds pendulous; radicle incumbent,
rarely obliquely accumbent; cotyledons inserted behind the bend of the
embryo. Petals white, more rarely yellowish or wanting.--Species 20.
Some of them (especially _L. sativum_ L., garden-cress) yield salad,
oil, and medicaments. =Lepidium= L.
Fruit strongly compressed, with a linear partition. 95
95. Seeds horizontal, inserted in the middle of the cell. Radicle
short, accumbent; cotyledons inserted behind the bend of the embryo.
Petals yellow. Median and lateral glands present.--Species 6. North
Africa. Some are used medicinally. =Biscutella= L.
Seeds pendulous from the top of the cell. Petals, when present, white,
red or violet. 96
96. Radicle incumbent; cotyledons inserted behind the bend
of the embryo. Style very short. Fruit reniform, wrinkled,
indehiscent.--Species 7. Some of them are used medicinally.
(_Senebiera_ Poir.) =Coronopus= Gaertn.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account