32 HOUGH'S AMERICAN WOODS. 



Modulus of Rupture, 387 ; Resistance to Longitudinal Pressure, 362 ; Re- 

 sistance to Indentation, 160; Weight of a Cubic Foot in Pounds, 40.78. 



USES. - - The wood is used in Texas, where the species is' comparatively 

 abundant, in cabinet-making. 



ORDER STYBACE-ffi : STORAX FAMILY. 



Leaves alternate, simple, pinnately veined and without stipules. Flowers regular, per- 

 fect; calyx more or less adnate to the ovary; corolla gamopetalous or polypetalous, with 

 4 or 8 lobes or petals ; stamens twice as many as the lobes of the corolla or more, adnate 

 to the tube and arranged in a single series; anthers introrse; ovary 2-5-celled, with 

 slender simple style and terminal stigma; ovules anatropous. Fruit a drupe with thin 

 dry flesh, sometimes winged; hard and mostly 1-seeded stone containing straight embryo 

 and copious albumen. 



Trees or shrubs with more or less stellate or scaly pubescence and confined to the warmer 

 regions of the globe. About 75 species are known grouped in 7 genera. Two genera are 

 represented in the United States and of these the following one is arborescent. 



GENUS MOHRODENDRON. BRITT. 



Leaves deciduous, oval to obovate-oblong, membranaceous, denticulate. Flowers bell- 

 shaped, in fascicles or short racemes, with slender drooping pubescent bracteolate pedicels 

 from the axils of the leaves of the previous year; calyx tube obconic, 4-ribbed, tomentose, 

 adnate to the ovary and with short 4-toothed limb; corolla epigynous, 4-lobed or divided, 

 thin and white, stamens 8-16, with flat filaments more or less united at base and slightly 

 adnate to the base of the corolla; ovary 2-4-celled, with an elongated style, terminal 

 stigma and 4 ovules in each cell, the upper ascending and the lower pendulous. Fruit a 

 dry, oblong, 2-4-winged drupe, 1-4-celled, tipped with the style and calyx teeth and con- 

 taining a thick-walled bony stone; embryo terete, axile. 



Named in compliment to Dr. Chas. Mohr, botanist and author of the Flora of Ala- 

 bama, etc. 



Trees and shrubs of the southern Atlantic states of North America and comprised in 

 three species of which two are aborescent and one shrubby. One of the former ranges as 

 far north as southern Illinois. 



261. MOHRODENDRON CAROLINUM, BRITT. 

 SILVER-BELL TREE. SNOW-DROP TREE. 



Ger., Carolina Maiglokenbaum. Fr., Colche d'Arbre de Carolina. Sp.-, 

 Campanilla blanca de Carolina. 



SPECIFIC CHARACTERS: Leaves oval to obovate-oblong, 4-6 in. long, acute or obtuse at 

 base, mostly acuminate at apex, remotely serrulate, pale tomentose at first, at maturity 

 glabrous dark green above, paler and more or less pubescent beneath. Flowers (March- 

 April) on drooping pedicels; corolla slightly lobed, obout % in. long; stamens 10-16 with 

 glabrous filaments; ovary 4-celled. Fruit ripening in late autumn, 4-winged, 1-2 in. long. 



The Silver-bell Tree on the high Alleghany Mountains attains the height 

 of 70 or 80 ft. (30 m.), with a trunk 3 to 4 ft. (1 m.) in diameter, but 



