48 MISSOURI BOTANICAL GARDEN. 
branched subterranean stem producing annual shoots only 
3-5 cm. long which are killed during the winter as far as 
they have not been covered by the shifting soil of the 
desert. — Plate 5. 
Subsect. 2. Spinosae, subsect. nov. 
A group containing only one species occurring in eastern 
Turkestan, Tibet and western Himalaya. It is chiefly 
- distinguished from the preceding group by the exserted 
stamens and styles. In the flowers of cultivated plants I 
have observed frequently only 3 nectaries, while in wild 
plants there seem to be always 5; this shows a transition 
from the actinomorphous to the zygomorphous flower. 
8. L. spinosa, ‘* Jacquemont ’’, Walpers, Rep. Bot. 2: 449 
(1843).— Hooker f. & Thomson, Jour. Linn. Soc. 
2:168 (1858).—Brandis, For. Fl. 255 (1874). — 
Clarke in Hooker, Fl. Brit. Ind. 3:13 (1882). — 
Fritsch in Engler & Prantl, Nat. Pflanzenfam. IV. 
4:167. f. 57B (1891).— Koehne, Gartenfl. 39:178 
(1890); D. Dendr. 544 (1893), 
Xylosteum spinosum, Decaisne in Jacquemont, Voy. dans 1’Inde 
4378. pl. 86. (1844). 
L. linearis, Royle, in herb.!, ex Hooker f. & Thomson, J. c. (1858). 
Caprifolium spinosum, Kuntze, Rev. Gen. Pl. 13 274 (1891). 
Himalayas: Kashmir (Royle); Kunawur ( Jacque- 
mont!); Gharwhal (ex Hooker f. & Thomson). Tibet 
(T. Thomson, Schlagintweit, no. 1433). East Turkestan 
(Bellew). 
var. ALBERTI, Zabel in Ruempler, Ill. Gartenbau — Lex. 
ed. 3. 468 (1901). 
L. Alberti, Regel, Act. Hort. Petrop. 7 : 550 (1880); Gartenfl. 30: 387. 
pl. 1065 (1881).— Dippel, Handb. Laubholzk. 1255. fi LOS 
(1889). — Hooker f., Bot. Mag. 121. pl. 7394 (1895). — Wolf, Isv. 
St. Peterb. Lesn. Inst. 8:13. pl. 13. f. 4-6 (1898). — Penkowsky, 
Derev. Kust. Ross. $318 (1901). 
Chamaecerasus Alberti, Carriére, Rev. Hort. 1886 : 547 (1886), 
