510 GKOSSULAEIACEAE 



branchlets often corky-winged: leaf -blades suborbicular in outline, palmately 5-lobed, 

 deep green, shining and glabrous, except the nerves beneath, truncate or subcordate at 

 the base, the lobes triangular or lanceolate, serrate, more or less acuminate; petioles 

 slender, about as long as the blades: flowers monoecious, in globose clusters, the 

 staminate heads racemose, the pistillate heads solitary on long drooping peduncles: 

 fruiting heads globose, 3-4 cm. in diameter, the bodies of the capsules somewhat 

 longer than the horns. 



In low woods, Connecticut to Missouri. Florida and Texas. Flowers in spring, matures 

 its fruit in the summer. Sweet Gum. Red Gum. Bilsted. Star-leaved Gum. Alli- 

 gator-tree. 



Family 9. GROSSULARIACEAE Dumort. Gooseberry Family. 



Shrubs often spiny. Leaves alternate: blades usually palmately lobed or 

 cleft. Flowers borne in racemes, which are sometimes reduced to few flowers, 

 or to a single flower. Calyx of 5 sepals borne on the hypanthium. Corolla of 5 

 relatively small petals. Androecium of 5 stamens. Gynoecium of 2 partially 

 united carpels : ovary with 2 parietal placentae : styles more or less united. Fruit 

 a many-seeded berry. 



Flower-stalk not jointed beneath the ovary: berry not disarticulating from the pedicel. 



1. Grossularia. 

 Flower-stalk jointed beneath the ovary: berry disarticulating from the 



pedicel. 2. Ribes. 



1. GROSSULARIA Mill. 



Shrubs with nodal spines. Racemes 1-few-flowered. Hypanthium elongated. 

 Flower-stalk not jointed, with minute or obsolete bractlets at the base. Berry not 

 disarticulating from the pedicel. Spring. Gooseberry. Wild Gooseberry. 



Sepals longer than the free portion of the hypanthium: berry smooth and glabrous: styles united 

 below, distinct above. 

 Filaments pubescent: sepals many times the length of the free portion of 

 the hypanthium: anthers oblong. 

 Petals cuneate by the lateral teeth near the top: hypanthium glandu- 

 lar-pubescent. 1 . G. cuTvata. 

 Petals lanceolate to oblong-lanceolate, not toothed: hypanthium pubes- 

 cent with glandless, often deciduous, hairs, and also sometime^ with 

 sessile glands. 2. G. campestris. 

 Filaments glabrous: sepals twice or thrice the length of the free portion of 

 the hypanthium: anthers globular or oval. 

 Stamens slightly exceeding the sepals: petals flabellate: sepals greenish 



purple. 3. G. rotundifolia. 



Stamens greatly exceeding the sepals: petals cuneate: sepals white or 



nearly so. 4. G. Missouriensis 



Sepals shorter than the free portion of the hypanthium: berry prickly. 5. G. Cynosbati. 



1. Grossularia curv^ta (Small) Coville & Britton. A diffusely branched shrub, 

 5-8 dm. tall, armed with subulate spines 4-6 mm. long, the stem with a loose ex- 

 foliating bark, the branches purplish, the recurved or drooping branchlets reddish. 

 Leaf-blades suborbicular, 1-2 cm. in diameter, 3-lobed, the lobes toothed, the terminal 

 lobe often mucronate ; petioles slender, as long as the blade or shorter, usually some- 

 what villous: peduncles 7-8 mm. long, mostly 1-flowered: pedicels twisted, nearly as 

 long as the peduncles, subtended by two 3-lobed ciliate bractlets: hypanthium glandu- 

 lar-pubescent: sepals linear or linear-spatulate, 6-10 mm. long, whitish, reflexed and 

 recurved, the edges hyaline, obtuse: petals prominently toothed near the apex, 1.5-2 

 mm. long, white: stamens conspicuous, erect: filaments villous: berry globose, 6-8 

 mm. in diameter, crowned by the persistent stamens. 



In dry or stony soil, upper Georgia and Alabama. 



2. GroBSularia campestris Small. A rather rigid shrub, 1-1.5 m. tall, armed 

 with slender spines, the shoots sometimes densely clothed with prickles, the bark red- 

 dish or purplish. Leaf -blades 2^ cm. broad (often larger on the shoots), more or 

 less pubescent, 3-5-lobed, the lobes rounded, toothed, the teeth obtuse or rarely acute; 

 petioles villous, shorter than the blades: peduncles usually 3-flowered, about as long as 

 the pedicels: bracts ovate, glandular-ciliate : hypanthium pubescent with glandless, 

 more or less deciduous hairs: sepals linear-spatulate, 7-11 mm. long: petals lanceolate 

 or oblong-lanceolate, 2 mm. long or nearly so, entire : filaments pubescent : berries 

 globose, about 1 cm. in diameter. 



In dry or rocky soil, Louisiana and Texas. 



