. Foundations of botany. Fig. 227. -I, a Shade-Plant {Clintonia) ; II, a Sun-Plant, Dog Fennel (Maruta). 322 FOUNDATIONS OF BOTANY \\\ * ^(jt. Fig. 228. — An Epiphytic Fern (Platycerinm) on a Tree Trunk. The more upright leaves next the trunk of the tree serve to collect waterand to accumulate a deposit of decaying vegetable matter, Avhile theouter leaves serve as foliage and bear spores. PLANT SOCIETIES 323 lingers on for fifty or a hundred years, reaching meantimea diameter of not more than two inches, and then, ongetting more light, shoots up into a large and valuabletimber tree.^ 394. Epip
. Foundations of botany. Fig. 227. -I, a Shade-Plant {Clintonia) ; II, a Sun-Plant, Dog Fennel (Maruta). 322 FOUNDATIONS OF BOTANY \\\ * ^(jt. Fig. 228. — An Epiphytic Fern (Platycerinm) on a Tree Trunk. The more upright leaves next the trunk of the tree serve to collect waterand to accumulate a deposit of decaying vegetable matter, Avhile theouter leaves serve as foliage and bear spores. PLANT SOCIETIES 323 lingers on for fifty or a hundred years, reaching meantimea diameter of not more than two inches, and then, ongetting more light, shoots up into a large and valuabletimber tree.^ 394. Epiphytes. — It is even easier for a plant to secureenough sunlight in a forest region by perching itself uponthe trunk or branches of a tree than by climbing, as ourwild grapevines and the great tropical lianas do. Thereis a large number of such perched plants, or epiphytes^embracing species of many different groups of seed-plantsand of spore-plants. The fern shown in Fig. 228 is a goodexample of an epiphyte. Instances among seed-plants arethe so-called Florida moss (Plate IV) and orchids likethose in Fig. 13. 1 See the Primer of Fores
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectplants, bookyear1901
