. A manual of botany. Botany. 178 MANUAL OF BOTANY tion, we have the embryo, which is the young sporophyte itself. The Gymnosperms are subdivided as under:ââ Order 1. Conifers or Pinaob^, the Coniferous or Pine Order.âCharacter.âEesinous t7-ees or evergreen shruhs, with branched continuous stems. Leaves Hnear, acioular or lanceo- rate, parallel-veined, fascicled or imbricate alternate. Flowers naked, monoecious or dioecious. Male flowers arranged in deciduous amenta. Stamens 1 or several, in the latter case monadelphous; anthers 1- or more-celled, opening longitudinally. Female flowers in cone
. A manual of botany. Botany. 178 MANUAL OF BOTANY tion, we have the embryo, which is the young sporophyte itself. The Gymnosperms are subdivided as under:ââ Order 1. Conifers or Pinaob^, the Coniferous or Pine Order.âCharacter.âEesinous t7-ees or evergreen shruhs, with branched continuous stems. Leaves Hnear, acioular or lanceo- rate, parallel-veined, fascicled or imbricate alternate. Flowers naked, monoecious or dioecious. Male flowers arranged in deciduous amenta. Stamens 1 or several, in the latter case monadelphous; anthers 1- or more-celled, opening longitudinally. Female flowers in cones, consisting of flattened imbricate carpels or scales arising from the axil of membranous bracts ; ovules naked, 2 or more, on the upper surface of each carpel. Fruit a Fig. 930. Fis. 931. Fig. /'i(7. 930. A ripe cone of the Larcli (Minis (_Abifs) Larix). Fig. 931. A mature carpel or scale of the Scotch Fir {Pinus sylvestris), with two winged naked seeds at its base. mic. Micropyle. ch. Chalaza. Fig. 932. A scale of the Larch bearing one naked winged seed ; the other seed lias been removed. woody cone or a galbulus. Seeds naked with a hard crustaceous integument, albuminous ; cotyledons 2 or many. Division of the Order and Illustrative Genera.âThis order has been subdivided as follows:â Sub-order 1. .46ieie«.âOvules inverted, with the micropyle next the base of the carpel. Pollen curved. Illustrative Genera :âPinus, Limn.; Araucaria, Juss. Sub-order 2. Cupressece. âOvules erect, with micropyle superior. Pollen spheroidal. Illustrative Genera:âJuniperus,Linn.; Cupressus, Tourn. The order Taxaoece is now frequently included in the Coniferce, forming the tribe or sub-order Taxece or Taxinece. Distribution and Numbers. âThe plants of this order occur. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1895
