THE MONOPETALOUS ORDERS. 



431 



New Granada. Its emetic principle (called Emetine) also exists 

 in Psychotria emetica of New Granada, which furnishes the striat- 

 ed, black, or Peruvian Ipecacuanha. Coffee is the horny seed 

 (albumen) of Coffsea Arabica. According to Blume, the leaves 

 of the Coffee-plant are used as a substitute for tea in Java. The 

 roots and leaves of Spigelia Marilandica (Carolina Pink-root), form 

 a well-known vermifuge. 



762 



809. Ord, Taleriaiiacese (the Valerian Family}. Herbs with op- 

 posite leaves, and no stipules. Flowers often in cymes, panicles, 

 or heads. Limb of the adnate calyx two- to four-toothed, obsolete, 

 or else forming a kind of pappus. Corolla tubular or funnel-form, 

 sometimes with a spur at the base, four- or five-lobed. Stamens 

 distinct, inserted on the corolla, usually fewer than its lobes. 

 Ovary one-ovuled, with one perfect cell and two abortive ones. 

 Fruit a kind of achenium. Seed suspended, exalbuminous. Em- 

 bryo straight. Radicle superior. Ex. Valeriana, the Valerian ; 

 Fedia, the Lamb-lettuce : the latter is eaten as a salad. The 

 roots, &c., of the perennial species exhale a heavy and peculiar 



FIG. 754. Hedyotis (Houstonia) caerulea. 755, 756. The two sorts of flowers that different 

 individuals bear, with the corolla laid open; one with the stamens at the base, the other at the 

 summit of the tube: the lower figure shows also a section of the ovary. 757. Cross-section of 

 an anther, magnified. 758. Anther less enlarged, opening longitudinally. 759. Capsule with 

 the calyx. 760, 761. Views of the capsule in dehiscence. 762. Diagram of a cross-section of 

 the unexpanded flower. 



