THE NEW STUDENT'S REFERENCE WORK
(a) Floral leaves:
the two outer sets of organs:
(b) Sporangial leaves:
the two i n n e r sets of organs:
(a) The botryose type: lowest flowers the oldest—•
prominent botryose types of inflorescence: raceme; panicle; thyrsus; corymb; umbel; spike; spikelet; head; ament or catkin; spadix.
(b) The cymose type: topmost flowers the oldest—
cyme cluster, resembling the corymb. b. Structure of the flowers:
(1) The receptacle or torus: in which the floral organs are in-
serted 1592.
(2) The floral organs:
1. The calyx: 312; composed of sepals 1724.
2. The corolla: 459; composed of petals 1459.
a. The filament: a
stalk-like portion 661.
b. The anther: which
bears pollen 78; pollen 1518; connective 445.
a. The pistil: an individual carpel 1494.
1. The ovulary: 1402.
2. The style: 1842. .3. The stigma: 1827.
(1) Apetalous: one set of floral leaves lacking
82.
(2) Naked: both sets of floral leaves lacking
686.
(3) Pistillate: stamen set lacking 686.
(4) Staminate: carpels lacking 686.
(5) Syncarpous: carpels united 1860.
(6) Apocarpous: carpels separated 83.
(7) Sympetalous: petals united 1860.
(8) Polypetalous: many petals 1522.
(9) Actinomorphic: regular petals 9.
(10) Zygomorphic: unlike petals 2138.
(11) Gamosepalous: sepals united 686.
(12) Monodelphous: all filaments united 686.
(13) Perianth: calyx and corolla united 1452.
(14) Epigynous: sepals, petals and stamens
above ovulary 622.
(15) Hypogamous: sepals, petals and stamens
beneath ovulary 907.
VI. PHYSIOLOGY.
General Reference: The activities of plants 1487.
1. NUTRITION: processes by which food is obtained and utilized 1366.
2271
(c) Modifi-c a tion i n the f o r ms of flowers:
1. The s t a m e n s :
outermost set of sporangial leaves 1808.
2. The carpels: in-
ner set of sporangial leaves 340.
