Actrna.] 
XLIV. ROSACEA. 
529 
capitate, but spicate in a few species ; in the latter they are spicate in most if not all species. 
There are a few species, however (not Australian), with the spines not developed, and ambiguous 
between the two sections. — Bentli. 
Spike cylindrical or elongated and interrupted. Stamens 4 to 10. Spines 
of the fruiting calyx numerous, irregularly scattered 1. A. ovina. 
Heads globular. Stamens 2. Spines of the fruiting calyx 4, 1 to each 
angle. Calyx-lobes united at the base, usually persistent. Fruiting head 
above Jin. diameter, with long glochidiate spines 2. A. sanguisorbce. 
1. A. ovina (sheep Acmna), A. Cunn. in Field, N. S. Wales, 358; Benth. 
FI. Austr. ii. 433. Stems ascending or erect, leafy, 1 to 2ft. high, silky-hairy. 
Leaflets ovate, from orbicular to oblong, f to fin. long, deeply and obtusely 
crenate or pinnatifid, glabrous above, silky-hairy underneath. Flowers in a long 
interrupted spike, more dense towards the end, polygamous. Calyx-lobes usually 
5, rarely 4, 6, or 7. Stamens in the males either about as many or 8 to 10, in 
the females reduced to minute staminodia, or 1 or 2 of them filiform, without 
anthers. Ovary in the females with a single or rarely 2 ovules ; style obliquely 
dilated at the end, with a broad unilateral fringed stigma. Fruit ovoid, 2 to 3 
lines long, glabrous or loosely villous, covered with short prickles, barbed at the 
end and irregularly arranged, 2 or 3 of them usually longer than the others, with 
a conical base. — Hook. f. FI. Tasm. i. 115 ; A. echinata, Nees in PI. Preiss, i. 95 ; 
A. Behriana, Schlecht. Linnasa, xx. 660 (calyx often 6 or 7-lobed, stamens 
often 10). 
Hab.: Many parts of southern Queensland. 
The species extends to New Zealand, and probably also to extratropieal S. America, for A. 
montevidensis, Hook. f. FI. Antarct. ii. 265, appears to be quite the same. — Benth. 
2. A. sanguisorbae (Burnet-leaved), Vahl. ; DC. Prod. ii. 492 ; Benth. FI. 
Austr. ii. 434. Stems prostrate or creeping and rooting at the nodes, the 
flowering branches ascending from a few inches to nearly 1ft., loosely silky- 
villous, leafy at the base. Leaflets from nearly orbicular and fin. long to oblong 
and fin., prominently toothed, glabrous or nearly so above, silky-hairy under- 
neath. Flowers numerous, in dense globular heads, on long terminal peduncles, 
usually under Jin. diameter at the time of flowering, becoming when in fruit 
dense globular burrs of fin. diameter or more. Calyx-lobes usually 4. Stamens 
2. Style with the fringed stigma of A. ovina. Fruiting calyx nearly 2 lines 
long, turbinate, the lobes 4-angled, with a long prickle barbed at the end, 
diverging from near the summit of each angle. — Hook. f. FI. Tasm. i. 114 ; 
A. sarmentosa, Carmich.; DC. l.c. 
Hab.: In the cooler parts of the colony. 
The species is also found in New Zealand, Tristan d’Acunha, and Lord Auckland’s Isles, and 
it is perhaps not really distinct from the S. American A. ovalifolia, Ruiz, and Pav. — Benth. 
7. ’•ROSA, Linn. 
(From the red colour of the flowers.) 
Calyx-tube dilated, narrowed at the mouth ; limb 5-partite, segments spreading, 
entire or pinnately toothed. Petals 5, sessile, spreading. Stamens indefinite, 
inserted in mouth of calyx-tube; ovary 1-celled, with a pendulous ovule. 
Achenes indefinite, included in the fleshy persistent calyx-tube. — Shrubs, often 
scandent, usually aculeate. Leaves alternate, imparipinnate ; stipules adnate to 
the petiole. Flowers rather large, hermaphrodite, solitary, or in corymbose 
cymes, white, red or yellow. 
A considerable genus, several of the species of which are very variable ; most abundant in 
the north temperate zone of the Old World. — Prof. Oliver. 
1. R. rubiginosa (glandular hairs dull-red), Linn. The well-known 
Sweet Briar. A tall often dense scrub, spreading by surculigerus stems ; prickles 
hooked, compressed, with smaller straighter ones and glandular hairs interspersed. 
