AN ANALYTICAL KEY TO THE GENERA OF AFRICAN PHANEROGAMS BY FR. THONNER WITH 150 PLATES AND A MAP DULAU & CO., LTD. 37 SOHO SQUARE, LONDON 1915   ALL RIGHTS RESERVED...

T HE flora of Africa being now comparatively well known, the author of the present work considered the time opportune to present to the public an analytical key for determining in an easy way the generic name of every phanerogamous plant growing wild, whether indigenous or naturalized, or cultivated upon a large scale within the geographical limits of Africa including the islands. The names and limits of the genera and families adopted in this work are those accepted in ENGLER & PRANTL’S

A. Engler & K. Prantl , Die natürlichen Pflanzenfamilien (Leipzig, 1889-1908). C. G. De Dalla Torre & H. Harms , Genera Siphonogamarum (Leipzig, 1900-1907). A. Engler , Syllabus der Pflanzenfamilien, 6. ed. (Berlin, 1909). —Das Pflanzenreich (Leipzig, 1900-1910). —Monographien afrikanischer Pflanzenfamilien und-gattungen (Leipzig, 1898-1904). —Die Vegetation Afrikas (Berlin, 1908-1910). G. Bentham & J. D. Hooker , Genera plantarum (London, 1862-1883). J. D. Hooker &am

Map of Africa , 1:49,000,000, with list of floral regions and provinces....

EMBRYOPHYTA SIPHONOGAMA (PHANEROGAMAE) SUBDIVISION GYMNOSPERMAE CLASS I. CYCADALES FAMILY 1. CYCADACEAE Stem simple, rarely branched at the top, woody, with mucilagineous juice. Leaves pinnate or pinnatisect, forming a tuft at the top of the stem and intermingled with scales. Flowers solitary, terminal, in the shape of a cone (but sometimes overtopped by the continued growth of the stem), dioecious, without a perianth. Stamens bearing many pollen-sacs on their lower side. Ovules 2-8 to each carp

ORDER PANDANALES FAMILY 5. TYPHACEAE Aquatic or marsh herbs with a creeping root-stock and simple stems. Leaves in two ranks, linear. Inflorescences spadix-like, cylindrical, superposed, interrupted by bracts, the lower female, the upper male. Flowers unisexual, without a perianth, but usually surrounded by hairs. Stamens 2-7; connective thickened; anthers opening lengthwise by two slits. Ovary 1-celled. Ovule 1, pendulous, inverted. Style and stigma simple. Fruit tardily dehiscent. Seed with ab

SUBORDER NYMPHAEINEAE FAMILY 76. NYMPHAEACEAE Aquatic herbs. Leaves floating, undivided, usually peltate. Flowers solitary. Sepals 3 or more. Petals 3 or more. Stamens numerous. Anthers opening inwards by longitudinal slits. Carpels 6 or more, distinct or united below into a many-celled ovary. Stigmas free or partly united. Fruit indehiscent or bursting irregularly. Seeds albuminous.—Genera 3, species 20. 1. Carpels separate, few-ovuled. Sepals 3. Petals 3. Flowers red, axillary. Leaves ovate, w

showing the number of Genera and Species and the Geographical Distribution of each Family....

Abortive ( abortivus ). Imperfectly developed. Accrescent ( accrescens ). Increasing in size with age. Accumbent ( accumbens ). Placed along the edge, especially of the cotyledons. Achene ( achaenium ). A dry and indehiscent fruit, especially one with a thin pericarp. Acuminate ( acuminatus ). Narrowed at the top and drawn out into a point. Acute ( acutus ). Sharply pointed, but not drawn out. Adelphous ( adelphus ). United in bundles, e.g., diadelphous = united in two bundles. Adherent ( adhaer

African ammoniacum—Ferula. African mahogany—Khaya. African sandal-wood—Osyris. African teak—Oldfieldia. African tulip-tree—Spathodea. Akee—Blighia. Alder—Alnus. Alkanet—Anchusa. Allseed—Radiola. Allspice—Pimenta. Almond—Prunus. Ambatch—Aeschynomene. Anise—Pimpinella. Apple—Pirus. Apricot—Prunus. Arnatto—Bixa. Arrow-root—Maranta, Tacca. Artichoke—Cynara. Ash—Fraxinus. Avens—Geum. Avocado-pear—Persea. Balata—Mimusops. Balm—Melissa. Balsam—Impatiens. Bamboo—Bambusa (and allies), Raphia. Banana—Musa