BOTANY. 55 
The philosophical system of Endlicher divides plants into two regions and 
five sections, as follows : 
NaruraLt System accorpine to ENDLICHER. 
Region I. TuatiopuyTa (frond plant). No opposition of stem and root. * 
No spiral vessels, and no sexual organs. Propagated by spores. 
Section 1. Protophyta. Developed without soil; deriving nourishment 
all around ; fructification indefinite. 
Section 2. Hysterophyta. Developed on decaying organisms ; nourished 
internally from a matrix ; all the organs appearing at once, and perish- 
ing in a definite manner. 
Region II. Cormopuytra. Opposition of stem and root. Spiral vessels and 
sexual organs distinct in the more perfect. 
Section 8. Acrobrya. Stem increasing by the apex, the lower part 
being unchanged, and only conveying fluids. | 
Cohort 1. Anophyta. No spiral vessels. Both sexes present. 
Spores free within spore-cases. 
Cohort 2. Protophyta. Bundles of vessels more or less perfect. 
No male organs. Spores free within one or many-celled spore- 
cases. 
Cohort 3. Hysterophyta. Both sexes perfect. Seeds without an 
embryo, consisting of many spores. Parasitic. 
Section 4. Amphibrya. Stem increasing at the circumference. Vege- 
tation peripherical. 
Section 5. Acramphibrya. Stem increasing both by apex and circum- 
ference. Vegetation peripherico-terminal. 
Cohort 1. Gymnosperme. Ovules naked, receiving the fecundating 
matter directly at the micropyle. 
Cohort 2. Apetale. Perigone either wanting or rudimentary or 
simple, calycine or colored, free or adherent to the ovary. 
Cohort 3. Gamopetalz. Perigone double; outer calycine, inner 
corolline ; gamopetalous, rarely wanting by abortion. 
Cohort 4. Dialypetale. Perigone double; outer calycine, parts dis- 
tinct or united, free or attached to the ovary; inner coralline, 
parts distinct or very rarely cohering by means of the base of 
the stamens; insertion hypogynous, perigynous, or epigynous ; 
sometimes abortive. 
Under these sections are enumerated 279 natural orders, grouped under 
sixty-one classes. 
The arrangement which we have selected to be the basis of our classi- 
fication is that of De Candolle, as modified by certain more recent 
authors. 
55 
