CHAPTER XV

=ARBORESCENT LYCOPODIALES.= Pp. 92–195.

=Lepidodendron= 93–181

i. General 93–97

ii. Leaves and Leaf-cushions 97–105

iii. _Lepidophloios_ 105–109

iv. The anatomy of _Lepidodendron vasculare_ 109–123

v. Lepidodendron stems as represented by casts and impressions of partially decorticated specimens 123–128 _a._ _Knorria_ 124–126; _b._ _Bergeria_ 126, 127; _c._ _Aspidiaria_ 127, 128.

vi. Lepidodendroid axes known as _Ulodendron_ and _Halonia_ 128–139 _a._ _Ulodendron_ 128–135; _b._ _Halonia_ 135–139.

vii. Anatomical characters of vegetative Lepidodendron shoots 139–181 1. _Lepidodendron esnostense_ 139, 140; 2. _L. rhodumnense_ 140; 3. _L. saalfeldense_ 141; 4. _L. fuliginosum_ 141–160; 5. _L. Harcourtii_ 160–163; 6. _L. Wünschianum_ 163–171; 7. _L. macrophyllum_ 171; 8. _L. Veltheimianum_ 171–177; 9. _L. Pedroanum_ 177, 178; 10. _L. australe_ 178–181.

viii. Fertile shoots of Lepidodendreae 181–195 A. _Lepidostrobus_ 181–191. i. _Lepidostrobus variabilis_ 187, 188; ii. _L. oldhamius_ 188–190; iii. _L. Brownii_, etc. 190, 191. B. _Spencerites_ 192–195.

## CHAPTER XVI =SIGILLARIA.= Pp. 196–226.

i. General 196–210; ii. Leaves 210–215; iii. Fertile shoots 215–218; iv. The structure of Sigillarian stems 218–224; v. _Sigillaria Brardi_ 224–226.

## CHAPTER XVII =STIGMARIA.= Pp. 227–247.

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