Crotonogynopsis.| | CXXII. EUPHORBIACE (PRAIN). 925 
shallow cupular, with 4-5 protuberances on the margin, alternating 
with the calyx-segments. Ovary 3-celled, glabrous; styles cylindric, 
glabrous, with laciniate tips. Fruit not seen. 
Upper Guinea. Cameroons; Buea, Deistel, 218! 
Mozamb. Distr. German East Africa: Usambara; Derema, 2700-3200 ft., 
Heinsen, 8! Scheffler, 166! 
64. ARGOMUELLERA, Pax in Engl. Jahrb. xix. 90. 
Flowers monecious, apetalous. Male: Calyx globose, splitting into 
3-4 valvate reflexed segments. Stamens numerous, free, inserted on 
a hemispherical receptacle, mixed with oblong glabrous or hirsute 
receptacular glands; anthers small, introrse, 2-celled, longitudinally 
attached to a narrow connective. Rudimentary ovary 0. Female: 
Sepals 5, rarely 6, rather distinctly 2-seriate, imbricate. Disk 0. Ovary 
3-celled, densely tomentose ; ovules solitary in each cell; styles 3, con- 
tinuous with the carpels, undivided, rather stout, slightly connate 
below, somewhat reflexed above, tomentose without, stigmatic but not 
papillose on the face. Capsule breaking up into 3 2-valved cocci; 
valves thinly woody. Seeds globose, without a caruncle; albumen 
fleshy ; cotyledons broad, flat—Shrubs or trees. Leaves alternate. 
Flowers in axillary usually androgynous spike-like racemes; males 
rather numerous, fascicled, each fascicle usually with a single central 
female, occasionally all the fascicles except the terminal (very rarely 
all the fascicles including the terminal) with only male flowers.— 
Pycnocoma, sect. Wetriaria, Mill. Arg. in DC. Prodr. xv. ii, 952. 
Species about 8; two endemic, the others Mascarene. 
Leaves pubescent on the nerves beneath, shortly petioled, 
base acute : : ° A . 1. A. macrophylla, 
Leaves glabrous, sessile, base rounded . : : . 2. A. sessilifolia. 
1. A. macrophylla, Pax in Engl. Jahrb. xix. 90. Shrub 6-12 ft. 
high, with tawny- or rusty-pubescent branchlets. Leaves very shortly 
petioled, thinly to firmly chartaceous, oblanceolate-oblong, 8-16 in. long, 
2-5 in. wide, acuminate, sharply serrate especially towards the apex, 
much narrowed to the entire very acute base, glabrous above, hirsute 
with spreading hairs on the nerves beneath; petiole rusty- or tawny- 
pubescent, 4 in. long; stipules pubescent, narrow-lanceolate, } in. long. 
Racemes several from the upper axils, 2-8 in. long; rhachis slender, 
pubescent with spreading hairs; bracts spreading, ovate, acute, 
pubescent ; flowers glomerulate, each cluster usually with several males 
and a single central female, sometimes with only a female in the 
terminal glomerule, occasionally with all the glomerules of male flowers 
only. Male sepals 3 or 4, reflexed, ovate-lanceolate, }in.long. Stamens 
numerous, exserted, mixed with glabrous or sparingly hirsute inter- 
Staminal glands. Female sepals 5 or 6, rather distinctly 2-seriate, the 
inner the smaller, narrow-ovate, acute, imbricate. Ovary 3-celled, 
densely tawny-pubescent ; styles recurved, stigmatic on the inner face 
