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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.