HY DROLEACEAE 969 
mainly near the top with rather coarse processes : capsules ovoid or globose-ovoid, 5-7 mm. 
long, 2-beaked. 
On herbs and shrubs, Maryland to Georgia. Summer and fall. 
11. Cuscuta Grondvii Willd. Foliage yellowish, becoming orange. Stems slender, 
often high-climbing, sometimes matted: flowers short-pedicelled, usually numerous in 
dense clusters : calyx not subtended by bracts ; lobes 5, ovate, obtuse, much shorter than 
the corolla-tube : corolla about 3 mm. long; lobes 5, ovate, obtuse, spreading, somewhat 
shorter than the tube ; scales narrow, equalling the corolla-tube, or surpassing it, broader 
above than below, sparingly fringed near the top and more sparingly along the sides with 
stoutish irregular processes: capsules subglobose, 3 mm. in diameter, sometimes abruptly 
pointed, partially enclosed by or seated in the persistent corolla. 
On herbs and low shrubs, Nova Scotia to Manitoba, south to Floridaand Texas. Summer and fall. 
12. Cuscuta calyptrata Engelm. Foliage pale, turning yellowish at maturity. 
Stems branching ; branches slender, not matted : flowers few or rather numerous in small 
clustered cymes, these becoming dense at maturity, sessile or nearly so: calyx glabrous; 
lobes orbicular-ovate or deltoid-ovate, obtuse, often slightly eroded : corolla early exserted; 
lobes ovate, obtuse, spreading or reflexed at maturity ; scales densely fringed, especially at 
the top, with rather long regular processes, narrower above than below: capsules sub- 
globose, 4-4.5 mm. in diameter, each capped with the persistent corolla. 
On herbs and shrubs, New York to Florida and Texas, Summer and fall. 
13. Cuscuta glandulósa (Engelm.) Small. Foliage bright orange, that of the 
inflorescence with red shining glands. Stems widely branched and spreading, commonly 
matted : flowers short-pedicelled, in loose subglobose clusters: calyx glandular; lobes 5, 
ovate to orbicular-ovate, obtuse: corolla 2-2.5 mm. long, pale; tube barely exserted ; 
lobes 5, spreading, obtuse ; scales as broad as long, sometimes surpassing the corolla-tube, 
fringed all around with quite regular processes: capsules spheroidal, 3-3.5 mm. in 
diameter. [C. obtusifolia var. glandulosa Engelm. ] 
On species of Polygonum and other herbs, Georgia to Florida and Texas. Also in the West Indies. 
14. Cuscuta exaltàta Engelm. Foliage yellowish, deeper at maturity. Stem much 
branched ; branches cord-like, high-twining, 2-6 m. long, often twisted together: flowers 
short-pedicelled, rather crowded in short spike-like racemes or panicles: calyx sub- 
globose, becoming flattened ; lobes suborbicular, fully as long as the corolla-tube : corolla 
about 4 mm. long ; lobes 5, suborbicular, about 3 as long as the tube, erect or ascending ; 
scales much shorter than the corolla-tube, 2-cleft, dentate: styles united : capsules globose- 
ovoid, 4-5 mm. high, obtuse. 
On shrubs and trees, southern Texas. Spring to fall. 
FAMILY 4. HYDROLEACEAE H.B.K. WATER-LEAF FAMILY. 
Annual or perennial caulescent herbs, with a watery sap. Leaves alternate, 
or sometimes opposite near the base of the stem, without stipules : blades lobed 
or pinnatifid, or rarely entire. Inflorescence cymose or in one-sided racemes, 
more or less clustered. Flowers perfect. Calyx of 5 more or less united sepals, 
free, the sinuses often appendaged. Corolla regular: lobes 5, convolute or im- 
bricated in aestivation, often appendaged inside. Androecium of 5 stamens adnate 
to the base of the corolla and alternate with the lobes. Filaments distinct, often 
bearded. Anthers introrse, versatile. ^ Gynoecium compound. Ovary free, 
1-celled, or rarely 2-celled, with parietal placentae. Styles partly united. Stigma 
somewhat capitate. Ovules few or numerous. Fruit a capsule with one or two 
incomplete cavities. Seeds few or sometimes numerous, amphitropous, with a 
crustaceous testa. Endosperm cartilaginous. Embryo eccentric. [ Hydrophylla- 
ceae Lindl. | 
Ovary 1-celled : styles 2-cleft: leaf-blades usually toothed, lobed or dissected. 
Corolla-lobes convolute in the bud : piacentae dilated. 
Stamens exserted. 
Stamens included. 
— 
. HYDROPHYLLUM. 
Calyx not much enlarged at maturity, the sinuses appendaged. 2. NEMOPHILA. 
Calyx much enlarged at maturity, the sinuses not appendaged. "1 cce B X. 
Corolla-lobes imbricated in the bud: placentae narrow. —— | 
Ovary 2-celled, but imperfectly so in Marilaunidium : styles 2, distinct: leaf-blades 
entire. : 
Corolla funnelform or salverform: capsule loculicidal: valves bearing the _ 
5. MARILAUNIDIUM. 
seeds. : TOM 
Corolla rotate to campanulate: capsule septicidal ; axis bearing the seeds. 6. NAMA. 
