PRIMULACEZ. (PRIMROSE FAMILY.) 279 
spreading spikes ; calyx funnel-shaped, smooth, the lobes of the scarious limb 
alternating with 5 smaller ones. — Salt marshes, Florida, and northward. Aug. 
and Sept. — Scape 19— 29 high. Leaves 3'- 6'long. Flowers blue. 
2. PLUMBAGO, Tourn. LEADWORT. 
Calyx tubular, 5-ribbed, 5-toothed. Corolla salver-shaped, 5-lobed. Stamens 
5, inserted on the receptacle. Styles united. Stigmas linear. Utricle splitting 
into valves from the base upward. — Herbs or shrubs, with alternate entire 
mostly clasping leaves, and blue or white fiowers in terminal spikes. 
1. P. scandens, L. Shrubby; leaves ovate-lanceolate, acute, narrowed 
into a clasping petiole; calyx glandular-viscid, half as long as the tube of the 
corolla ; lobes of the corolla ovate, white ; style smooth. — South Florida. — 
Leaves 2'-3!long. Spike elongated. 
Orper 87. PRIMULACE, (Primrose FAMILY.) 
Herbs, with simple alternate or opposite leaves, and regular flowers. — 
Calyx 4 - 5-lobed, persistent. Corolla 4 —5-lobed. Stamens 4 — 5, oppo- 
site the lobes of the corolla, and inserted on its tube. Ovary free, or — 
partly adherent to the calyx, 1-celled, many-ovuled. Placenta central, 
globose. Style single. Capsule 1-celled, many-seeded, valvate or circum- 
scissile. Seeds anatropous or amphitropous. Embryo straight in fleshy 
albumen. 
Synopsis. 
* Ovary free from the calyx. 
+ Capsule opening by valves or teeth. 
l HOTTONIA. Corolla salver-shaped. Leaves pectinately dissected 
2. LYSIMACHIA. Corolla wheel-shaped. Stems leafy. Leaves opposite, entire. 
3. DODECATHEON. Corolla wheel-shaped. Stemless. Leaves radical. 
+ + Capsule opening transversely. 
4. ANAGALLIS. Parts of the flower 5. Leaves opposite. Sta bearded 
5. CENTUNCULUS. Parts of the flower 4. Leaves alternate, Stamens beardless. 
z * * Ovary partly adherent to the calyx. E A E 
$ SAMOLUS. Stamens 5, with sterile filaments interposed. Capsule valvate. — aoe 
L HOTTONIA, L 
Calyx 5-parted. Corolla salver-shaped, 5-lobed. Stamens 5.. -Style slender. 
Capsule globose, at length splitting into 5 valves, which cohere at the base and 
apex. Seeds fixed by the base, anatropous. — Aquatic perennial herbs, with  — 
_Pectinately dissected leaves. Flowering stems mostly clustered, nearly leafless, 
inflated, bearing at the joints whorls of small white flowers. P 
 . 1. H. inflata, Ell. Flowering stems 3 -several in a terminal cluster, 
