1078 
LXXXYI. SOL AN ACE, 
\ Solarium* 
proposed by Sendtner, Dunal, and others break down in several instances, and are scarcely 
applicable to the Australian species. The three first here enumerated have a marked difference 
in the anthers, but there are extra-Australian intermediates ; the differences in the form of the 
corolla, often very difficult to ascertain from dried specimens, are seldom in relation to other 
characters ; and the form and colour of the fruit varies in a remarkable degree in some in- 
dividual species. If, therefore, in the following key I have founded the principal groups or 
series chiefly upon indumentum and armature, it is not that I regard them as good sections, 
but only because I have as yet found no better way of leading to the determination of the 
Australian species — Benth. 
i 1. .Vo prickle*. Whole plant glabrous or pubescent leith simple hairs ( not stellate). 
Anthers very obtuse, parallel the terminal slits continued more or less 
down the sides. 
Annual. Leaves ovate on long petioles. Flowers very small, in 
pedunculate umbels 1. S. nigrum. 
Perennials or shrubs. Leaves lanceolate or linear, entire or pinnatifid. 
Flowers in short lateral loose racemes. 
Leaves mostly acute, the longer ones with a few long lobes. 
Flowers large. Berries green or yellow 2. S. aviculare. 
Leaves mostly obtuse, very rarely and shortly lobed. Flowers 
moderate. Berries purple 3. S. simile. 
Anthers tapering upwards, opening only at the end. Glabrous shrub. 
Leaves broadly lanceolate. Corolla deeply lobed 4 .* S. pseudocapsicum. 
Shrub. Leaves ovate, pubescent underneath 5 ■ S. Shanesti. 
§ 2. Ko prickles. Stellate pubescence or tomentum on the whole plant or rarely on the flowers 
only. 
Flowers in forked pedunculate cymes. 
Leaves quite glabrous. Cymes loose. Corolla deeply lobed ... 6. S. viride. 
Leaves (large) very soft and densely tomentose. Cymes dense. 
Leaves shortly acuminate, without stipule-like leaves at the base . 8. S. rerbasci folium. 
Leaves long-acuminate, mostly with small semicircular stipule-like 
leaves at the base 9.*S. auriculatum. 
Flowers in simple lateral racemes or clusters. 
Leaves sprinkled with scattered stellate hairs. Corolla deeply lobed 7. S. tetrandrum. 
.Leaves densely or closely tomentose underneath or on both sides. 
(See $ 3, of which several species, especially S. discolor, S. esuriaie, S. furfuraceum, and 
S', diant hopliorum, are occasionally unarmed.) 
§ 3. Prickles slender on the branches and leaves (numerous feic or very rare), noneon the- 
caly ces. Stellate pubescence or tome7itum on the whole plant or rarely on the floirers only. 
Leaves ovate-acuminate, repandly-lobed ; petioles about 2in. Fruit 
yellow, globular, lin. diameter 10. S. macoorai. 
Leaves glabrous above except along the veins (rarely scabrous-pubescent 
in S. violaeeum), tomentose underneath (except in S. defensum). 
Flowers rather small, the corolla deeply lobed. 
Leaves tomentose and white underneath. 
Leaves ovate or elliptical, rarely above 2in. long. Tomentum 
very close and short 11. S. discolor. 
Leaves lanceolate, large and broad or small and narrow, mostly 
acute. Tomentum close or loose 12. S. stelligerum. 
Leaves narrow-oblong, obtuse, usually small. Tomentum close . 13. S. parvifolium. 
Leaves green underneath, glabrous or loosely stellate-hairy. 
Leaves linear or linear-lanceolate, entire or hastate. 
Branches slender. Prickles abundant 14. S. f erodes i mum. 
Branches almost glabrous. Prickles slender, numerous. 
Corolla white 15. S. sporadotrichum.. 
Leaves oblong-lanceolate, pinnatifid, 5 to 6in. long 16. S. defensum. 
Flowers large, the corolla-lobes broad and short. 
Leaves broadly lauceolate. Ovary 2-celled 17. S. violaeeum. 
Leaves oblong-linear or linear-lanceolate. Ovary 2-celled . . .18. 8'. amblymerum. 
Leaves oblong or ovate-oblong, obtuse, cordate at the base. Ovary 
4-celled 19. S. tetrathecum. 
Leaves closely whitish tomentose on both sides (the tomentum rarely 
disappearing at length on the upper side). Calyx-teeth very small 
at the time of flowering. 
Leaves small, mostly broad on very short petioles. 
Leaves under Jin. long, ovate or broadly oblong 20. S. elachophyllum 
Leaves cordate or orbicular, about Jin. long. Corolla deeply lobe 1 21. S. orbiculatum. 
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