THE NEW STUDENT'S REFERENCE WORK
II. PLANT LIFE.
(1) Kinds: 73 (Anglo- < sperms).
1. VARIETIES OF PLANTS:
a. Flowering plants that reproduce themselves by enclosed seed:
f (a) Trees: woody stem, single 1940; • trunks grow at least 20 feet
tall, oak 1367; maple 1166;
apple 95.
(b) Shrubs or bushes: woody stem—•
not a single main trunk, rose 1633; briar 1855.
(c) Vines: woody, slender climbing
stem, grape 794; ivy 950; pea 1432; Virginia creeper 2035; morning-glory 1263; clematis 407.
(d) Herbs: plants with stems not
woody, dying down to the ground each year, beets 1845; grass 795; grains 2073; strawberries 1837; mustard 1292; mint 1237; saxifrage 1685.
b. Flowerless plants that reproduce themselves by exposed seed:
(a) Evergreens of temperate zone:
conifers 443; pine 1491; cedar 354.
(b) Cycads of tropics: 492.
(c) Ginkgo—maidenhair tree: 767.
(d) Gnetums of the deserts: 818.
c. Flowerless plants reproduced by means of spores instead of seeds:
(a) Ferns: common forms of the
woods 656.
(b) Mosses: bare — soil-moss 12S2;
hair-moss 1270; hepatica 865; peat 1436; 1125.
(c) Lichens: gray growths on fence-
boards and rocks 1859.
(d) Algae: sea-weeds and slimes on
surface of ponds 48; 392; 904; 491; 1463; 1609; 522.
(e) Fungi: moulds — yeasts 2121;
mushrooms 1284; grain smut
227; 1479; 178; 17; 1949; 1678; 1420.
(f) Bacteria: 154 plants that cannot
be seen with the naked eye—-smaller than the finest dust L 657; 761; 1633.
(2) How reproduced: by means of spores 1803; 1601; 1796; 117; 1804; 661.
2. MEANS OF REPRODUCTION:
a. Flowers — fitted to produce seed:
(1) Kinds: 818 (Gymno-sperms).
(1) Kinds: 1897.
(1) Parts: 686.
(2) Forms: 925.
(a) Stamens: produce pollen 180S.
(b) Stigma: receives pollen 686.
(c) Calyx: floral display 312.
(d) Corolla: 459.
(a) Single.
(b) Clusters.
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