

Primulaceae 303 
GLAUX BLACK SALTWOR1 
Small; ours glabrous, in salt marshes; stems leafy. Leaves opposite, entire, fleshy; 
in ours sessile, oval to linear-oblong, 6—12 mm. long. Flowers small, axillary, white 
or pink. Calyx 5-parted; segments petal-like, about twice as long as the tube; tube 
campanulate. Petals none. Stamens at base of calyx, alternate with the calyx-lobes. 
Capsule 5-valved at the top. Seeds few. (Gk. glaukos—sea-green, hence glaucous; re- 
ferring to the color of the plant.) W. 
G. maritima L. 
ANAGALLIS 
Annual (ours) or perennial; stems in ours 4-angled, 1—3 dm. long. Leaves oppo- 
site or whorled or the upper ones alternate; in ours ovate, sessile, 12-25 mm. long. 
Flowers small, axillary, red (ours), or white or blue. Calyx 5-parted, persistent. Corolla 
rotate; segments in ours lanceolate, acute, minutely denticulate or glandular-ciliate. Cap- 
sule globose. Seeds many, minute. (Gk. anagelao—to laugh; thought to counteract mel- 
ancholia. ) W. A. arvensis L. (Poor-man’s Weather-glass) 
CENTUNCULUS CHAFF-WEED 
Annual, glabrous, ours in moist places; stems in ours 5-15 cm. long. Leaves in 
ours alternate, ovate to obovate or spatulate-oblong, 4—6 mm. long, all but the lowest 
sessile. Flowers minute, solitary in the axils of the middle leaves. Calyx 4—5-parted, 
longer than the corolla, persistent; segments acute, linear. Corolla small; tube subglobose; 
teeth entire, acute. Seeds many, minute. (Diminutive of L. cento=a patch; probably 
referring to its manner of growth.) C. E. 
C. minimus L. 
DODECATHEON SHOOTING STAR 
Perennial, low. Leaves entire or merely serrate or dentate. Flowers few or nu- 
merous. in an umbel terminating a naked scape. Calyx deeply 4—5-lobed; lobes re- 
flexed in flower, erect in fruit. Corolla 4—5-parted; tube very short, thickened and di- 
lated at throat; segments long, narrow, reflexed. Seeds many. (Gk. dodeka=12, theos 
—god; the name of the primrose, which the gods were thought to protect. ) 
A.  Flower-parts normally in 4’s._ C. E. 
A. tetrandrum Suks. 
AA. Flower-parts normally in 5’s. 
B. Herbage glabrous. 
C. Leaves entire. 
D. Filaments free or anthers sessile. 
E. Leaves broadly elliptic to obovate. W. (D. hendersoni.) 
, D. latifolium Pip. (Mosquito-bills) 
EE. Leaves narrower. 
F. Leaves 2—5 cm. long; scape 0.7—1.5 dm. long. E. 
D. campestre How. 
FF. Leaves 5—12 cm. long; scape |—2 dm. long. C. E (D. con- 
jugens leptophyllum.) 
D. conjugens Gr. 
FFF. Leaves 20—30 cm. long; scape 4—6 dm. long. E. 
D. dispar. Nels. 
