60 
Spring Flora of Oklahoma 
I. LIQUIDAMBAR L. 
Large trees wth resinous sap, simple, alternate-lobed, 
petioled leaves, and small monoecious flowers in heads, the 
staminate clusters racemose, the pistillate ones usually soli¬ 
tary. Calyx and corolla of the staminate flowers none. 
Stamens numerous. Filaments short. Calices of pistillate 
flowers grown into one. Petals none. 
1. Liquidambar StyracMua L. Sweet Gum. A large forest 
tree. Bark very rough, branches usually winged with corky ridges. 
Leaves broader than long, subcordate at the base, deeply 3-7-lobed, 
glabrous above, often pubescent in the axils of the veins beneath, 
the lobes triangular-ovate, acute, sharply and finely serrate. 
Along streams in eastern part of state. April-May. 
FAMILY 32. GROSSULARIACEiE. Gooseberry Family. 
Erect or spreading shrubs, often with bristly or spiny 
stems. Leaves alternate, simple, petiolate, broadly ovate 
to rotund, usually palmately veined, more or less lobed 
and toothed; inflorescence terminal on short, lateral, 
sometimes leafless branches, racemose, or the raceme 
reduced to a single flower. Flowers regular, perfect. 
Calyx-tube elongated, short or obsolete. Sepals, petals, 
and stamens 5, alternate. Ovary 1-celled. Fruit a berry. 
I. RIBES L. 
Unarmed shrubs with palmately veined, mostly lobed 
leaves. Flowers in several-flowered racemes. Pedicels 
jointed beneath the ovary. Ovary not spiny, sometimes 
glandular. Calyx-tube tubular to campanulate, sometimes 
obsolete. Fruit breaking from the pedicel. 
1. Ribes odoratum Wendl. Missouri Currant. Unarmed. Pet¬ 
ioles rather slender, pubescent. Leaves 3-lobed or sometimes 5- 
lobed, broadly cuneate or truncate at the base, the lobes obtuse, few¬ 
toothed or entire. The racemes leafy-bracted, few flowered, villous. 
Flowers bright yellow, spicy-scented. Fruit black, glabrous. 
In rich, moist soil and rocky soil. April-May. Oklahoma, Co¬ 
manche and Murray counties. 
