. Botany for high schools and colleges. Botany. 476 BOTANY. details. The general disposition of tlie smaller veins is well illustrated by Fig. 369a.* 568.—The sub-class Dicot;yledones is composed of thirty- six cohorts, containing in all from 150 to 200 natural orders. For convenience, the cohorts are separated into three artifi- cial groups—the Apetalse, Gamopetalae, and Choripetalae (Polypetalse)—an arrangement which does violence to nature, separating widely many orders which are evidently closely related to each other, I. APETAL^. Plants whose flowers' generally have but a single floral en
. Botany for high schools and colleges. Botany. 476 BOTANY. details. The general disposition of tlie smaller veins is well illustrated by Fig. 369a.* 568.—The sub-class Dicot;yledones is composed of thirty- six cohorts, containing in all from 150 to 200 natural orders. For convenience, the cohorts are separated into three artifi- cial groups—the Apetalse, Gamopetalae, and Choripetalae (Polypetalse)—an arrangement which does violence to nature, separating widely many orders which are evidently closely related to each other, I. APETAL^. 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 Balanophoreae. — Fleshy leafless parasites, mostly of the trop- ics. One species, Cynotnorium coccin- eum, of the Mediterranean region, is sometimes eaten. Order Santalaceae.—Leafy herbs. Fig. 369a.—Fragment of a leaf of a shrubs, or trees, mostly parasitic, num- showing reticulated venation. r\ bering about 200 species, which are margin of leaf, x De distributed in temperate and tropical regions. Gomandra umhella'a, a perennial herb, is our most common repre- sentative of the order. Saiiinlum 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 acuminatus. "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 Denkschriften and Sitzungsherichte Wien. Kais. Ahid. Wissen. They are excellently il- lustrated w
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