144 HAMAMELIDACEAE. 



2. PHILADELPHUS L. Shrubs. Leaves deciduous: blades entire or 

 toothed. Sepals 4 or 5, prominent. Petals convolute, relatively large. Stamens 

 numerous, or very rarely 15. Styles present. Capsule loculicidal. 



1. P. inodorus L. Shrub 2-3 m. high: leaf -blades ovate, often broadly so, 

 or oval, 3-10 cm. long, prominently 3-5-ribbed at the base : sepals ovate : 

 corolla 3-4 cm. wide. — M. Bare, on the banks of the Little Chiquesalunga 

 Creek. Nat. of the s. U. S. — Spr. — Mock-orange. 



Family 6. HAMAMELIDACEAE. Witch-hazel Family. 



Shrubs and trees. Leaves alternate : blades mostly toothed. Flow^ers 

 perfect, monoecious, or polygamous, variously clustered or spicate. Calyx 

 of 4 or 5 sejDals. Corolla of 4 or 5 narrovp petals, or wanting. Androe- 

 cium of 4-many stamens. Gynoecium 2- or 3-carpellary. Ovary 2- or 3- 

 celled : styles distinct. Fruit a leathery or woody capsule, often elastieally 

 dehiscent. 



1. HAMAMELIS L. Shrubs or trees, with perfect or polygamous flowers, 

 which are borne 3 together on short lateral peduncles. Sepals spreading or 

 reflexed. Stamens 4: filaments short-subulate. Capsule abruptly beaked. 



1. H. virginiana L. Shrub or small tree: leaf -blades suborbicular, oval- 

 elliptic, or obovate, 4-15 cm. long, coarsely crenate: petals yellow, 1-2 cm. 

 long: capsules ovoid to subglobose, 12-15 mm. long, elastieally dehiscent. — - 

 Common, in woods and thickets, and on stream-banks. - — Fall. — Witch-hazel. 

 Witch-elm. 



Family 7. GROSSULARIACEAE. 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 jointed beneath the ovary : berry disarticulating from the pedicel. 



1. RiBES. 



Flower-stalk not jointed beneath the ovary : berry not disarticu- 

 lating from the pedicel. 2. Gkossularia. 



1. KIBES L. Shrubs with erect stems and branches, without nodal spines. 

 Leaf-blades palmately veined and lobed. Flowers solitary or few together, 

 borne on stalks which are jointed beneath the ovary. Berry disarticulating 

 from the stalk. — Currant. 



1. R. americanum Mill. Shrub with grayish twigs: leaf -blades 2.5-7 cm. 

 wide, finely pubescent, with 3-5 triangular or ovate lobes irregularly toothed: 

 hypanthium usually pubescent in lines above the ovary: sepals oblong-ovate, 

 5-6 mm. long: petals oblong, -| as long as the sepals: stamens about as long 

 as the petals : berries 6-10 mm. in diameter, black. — Common, on roadsides 

 and in fence-rows and thickets. — Spr. — Wild black-currant. 



2. GROSSULABIA Mill. Shrubs with irregular arching or recurved 

 stems and branches, and with nodal spines. Leaf-blades palmately veined. 

 Flowers in drooping racemes or panicles, borne on stalks which are jointed 

 near the base. Berry not disarticulating from the stalk. — Gooseberry. 



