492 ONAGRACEAE, [Von. II. 
11. HARTMANNIA Spach, Hist. Veg. 4: 370. 1835. 
Annual or perennial caulescent herbs with branched stems. Leaves alternate, commonly 
pinnatifid or lyrate; buds drooping. Flowers perfect, white, red or purple, diurnal, in ter- 
minal spikes or racemes. Calyx-tube funnelform; calyx-segments narrow, deciduous, their 
tips mostly free in the bud. Petals 4, spreading. Stamens 8, the alternate ones longer; fila- 
ments filiform; anthers linear. Ovary elongated, 4-celled; stigma 4-cleft; ovules numerous 
on slender stalks, in many rows. Capsules club-shaped, 4-winged, sessile or stalked. Seeds 
numerous, not tuberculate. [In honor of Emanuel Hartmann, a resident of Louisiana. ] 
About to species, in North and South America. 
1. Hartmannia specidsa (Nutt. ) Small. 
Showy Primrose. (Fig. 2594.) 
OE. speciosa Nutt. Journ. Acad. Phil. 2: 119. 1821. 
ne a speciosa Small, Bull. Torr. Club, 23: 
181. 1896. 
Erect, ascending or decumbent, more or less 
branched, 6/-3° high, puberulent or finely pu- 
bescent. Stem-leaves lanceolate or linear-lanceo- 
late, sessile, or short-petioled, acutish, sinuate 
or pinnatifid, 2’-3’ long; basal leaves slender- 
petioled, oval or oval-lanceolate, repand or pin- 
natifid at the base; flowers white or pink, 114/— 
34’ broad, generally few, loosely spicate; petals 
broadly obovate, emarginate; calyx-lobes ovate- 
lanceolate, acuminate, spreading, the tube rather 
longer than the ovary; capsule club-shaped, 
strongly 4-ribbed, 4-winged, pubescent, 6’/—9/’ 
long, on a short stout pedicel. 
Prairies, Missouri and Kansas to Louisiana, Texas, 
Arizona and northern Mexico. May-July. Exten- 
sively naturalized in South Carolina and Georgia. 
12, PACHYLOPHUS Spach, Hist. Veg. 4: 365. 1835. 
Perennial acaulescent or nearly acaulescent herbs. Leaves basal, leathery, pinnatifid or 
pinnately-toothed, petioled. Flowers basal, more or less tufted. Calyx pubescent, its tube 
linear-funnelform, its segments narrow, 2-3 times shorter than the tube. Petals white or 
pink, spreading. Stamens 8; filaments filiform, the alternate ones longer; anthers linear. 
United styles filiform; stigma 4-cleft. Capsules basal, woody, pyramidal, its angles retuse 
or obtuse, transversely wrinkled. Seeds sessile, in 1 or 2 rows, deeply furrowed along the 
raphe. [Greek, referring to the tuberculate edges of the valves of the capsule. ] 
A monotypic genus of western North America. 
1. Pachylophus caespitésa (Nutt.) Raimann. Scapose Primrose. 
(Fig. 2595.) 
OEnothera caespitosa Nutt. Fras. Cat. 1813. 
OEnothera scapigera Pursh, Fl. Am. Sept. 263. 1814. 
Pachylophus caespitosa Raimann in Engl. & Prantl, 
Nat. Pfl. Fam. 3: Abt. 7, 215. 1893. 
Acaulescent or nearly so, perennial or biennial 
from a thick woody root. Leaves clustered at 
the base, narrowed into a slender petiole, lanceo- 
late, oblanceolate or oval, acutish at the apex, 
densely pubescent, sinuate-dentate, often densely 
ciliate with white hairs, repand or pinnatifid, 3/— 
8’ long, usually less than 1’ wide; flowers few, 
white or rose, 114’-3’ broad; petals obcordate; 
lobes of the calyx pubescent, narrowly lanceolate, 
reflexed-spreading, its tube 2’-7’ long, dilated at 
the mouth, many times longer than the ovary; 
capsule sessile, ovoid, strongly tuberculate on 
each side, the angles ribbed; seeds densely and 
minutely tuberculate. 
Nebraskaand Montana tothe Northwest Territory, 
south to Nevada, New Mexico and Sonora. June-July. 
