Sporophyio Generaifon. Oophyie Generaiion. 
(Asexual I'liasc.) (Sexual Phase ) 
Allcrnaiion of gcncraliotts clearly definrd. 
Notes. 
Sexual generaiion 
coniplcicly 
Branch v.-Spcrniaphyta. 
True seed plants, 
very subordinalc, in lilt Dicolyltdon, Iiecoming alrao.l 
M|i|iresscd ivilh rtsiiecl to the general slraclnre. 
X VI.— Gymnosi'Erm.k. 
Carpels open, seeds naked. 
X V n — A.vciospermk. 
Carpels forming closed seed vessels. 
llclerosporous; proiballi two 9 j. 
Heterosporous, the rudimentary pruihalli often wanting. 
1 . -Monocolyledons. | . „ie„,y,ed„„,. 
Orders. 
1. Cycadaceae. 2. Conifern*. 
.3. Taxaceaj. 1 . Gnctacca;. 
Asexual propagalion subordinate ; 
sometimes by tubers. 
Orders numerous. | Orders numerous. 
Asexual propagation subordinate, rarely wholly replacing the sexual- 
varied, by means of runners, stolons, ofTsels. bulbs, suckers, tubers, and 
rarely by parthenogenesis. 
1 
1 1 , I’roihallus rudimentary. ^ 
2. Anthcridium rudimentary, (Pollen 
lube.) 
3. S|)crmaioxoids none. (Protoplasm 
of the anthcridium.) 
1. Prothnllus not developed. 
2. .Aiuheridium rudimentary, (Pollen 
lube.) 
3. Spcrmuiozoids none. (Protoplasm 
of the anthcridium.) 
j 1. Prolhallus not develo|>ed. f 
2. .Anthcridium rudimentary. (Pollen 
lube.) 
3. Spermatozoids none. (Protoplasm 
of the anthcridium.) 
I. Prolhallub 5 (endosperm), formed 
before impregnation ; parasitic 
upon the asexual generation. 
(Seeds albuminous ) 
II. .Vrclicgoiiium well formed, 
ni. Oosphcrc (Ovum.) 
I. Prothalhis j (endosperm), formed 
only after impregnation of the 
ovum i parasitic upon the asexual 
generation. (Seeds albuminous.) 
11. Archegonium not formed. 
HI. Oosphcrc (Ovum, Germ cell,) 
I. Prolhallus i (endosperm) f.umcd 
only after impregnation of the 
ovum, generally obliterated. 
(Seeds cxalbuminous.) 
II. Archegonium not formed. 
Ill Oosphcrc (Ovum or Germ cell.) 
4. Oospore. 
5. Suspensor. 
ti ICmbryo with 2 to several colylcdons. 
7. Normal iilant. 
8 . .Anihophylla. 
.Micro 5 i)oi'angi.i (Anthers.) 
Id. .Microsjiores (Pollen.) 
4. Oospore. 
5. Suspensor. 
(5. Embryo with one cotyledon. 
7. Normal plant. 
8 . Stamens. 
9i Microsporangia (.\nthcrs.) 
10. Microspores. (Pollen.) 
4 . Oospore. 
5. Suspensor. 
(i. Einbiyo with two cotyledons. 
7. Nornwl plain. 
8 . Stamens. 
y. Microsporangia (.Vnthers ) 
10 . Microsporcs. (Pollen.) 
IV’. Oospore. 
Suspensor. 
^ I. Embryo with 2 to several cotyledons 
Vll. Normal plant. 
VTII. Carpophyllmn. 
IX. Maerosjiorangu (Ovules.) 
X. .Macrosporc (Embryo sat) 
IV. Oospore. 
V. Suspensor. 
VI. Embryo with one cotyledon, 
vn. Normal phint. 1 
VIII. Pistil. 
IX. Macrusporangia (Ovules ) | 
X. Macrosporc (Embryo mc) | 
IV. Oosjiore. 
V. Suspensor. 
VI. Embryo with two cotyledons. 
Vll. Normal plant. 
Ill, Pistil. 
l.\. Macrosjiorangia (Ovules) 
X. Macrosporc (Embryo sac ) 
