. Botany for high schools and colleges. Botany. 476 BOTANT. details. The general disposition of the smaller veins is well illustrated by Fig. 369a.* 568.—The sub-class Dicotyledones is composed of thirty- six cohorts, containing in all from 150 to 200 natural orders. Por convenience, the cohorts are separated into three artifi- cial groups—the Apetalae, Gamopetalae, and Choripetalse (Polypetalae)—an arrangement which does violence to nature, separating widely many orders which are evidently closely related to each other. I. AVETKLM. Plants whose flowers generally have but a single floral envel
. Botany for high schools and colleges. Botany. 476 BOTANT. details. The general disposition of the smaller veins is well illustrated by Fig. 369a.* 568.—The sub-class Dicotyledones is composed of thirty- six cohorts, containing in all from 150 to 200 natural orders. Por convenience, the cohorts are separated into three artifi- cial groups—the Apetalae, Gamopetalae, and Choripetalse (Polypetalae)—an arrangement which does violence to nature, separating widely many orders which are evidently closely related to each other. I. AVETKLM. Plants whose flowers generally have but a single floral envelope (calyx), this even, in some cases, wanting. 569. Cohort 1. — Santalales. Herbs, shrubs, or trees, mostly parasitic, with inferior ovary, generally naked ovules—, no integuments—and seeds usually containing endosperm. Order Balanophoreee. — Flesliy leafless parasites, mostly of the trop- ics. One species, Cynomorium coccin- eum, of the Mediterranean region, is sometimes eaten. Order Santalacese.—Leafy herbs, shrubs, or trees, mostly parasitic, num- bering about 300 species, which are distributed in temperate and tropical regions. Comandra umbella'a, a perennial herb, is our most common repre- sentative of the order. Santalum album, the Sandalwood Tree of South Asia, attains a height of seven to eight metres (25 feet). Its dark red wood is used in cabinet- making, and for burning incense in Buddhist temples. Other species from the Pacific islands also furnish sandalwood. The Quandang Nut of Australia is the edible fruit of a small tree, Fusanus aeuminatus. " the name of an imaginary something intermediate between primary stem and ; * The student who wishes to study this subject fully should consult the papers of Dr. Ettingshausen, published in Denkachriften and SitzungsbericJite Wien. Kais. Akad. Wissen. They are excellently il- lustrated with many " nature printed" Fig. 3690.—Fragment of a leaf of a Dicotyledon {Psorale
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1888
