NOTES AND ABSTRACTS. 



913 



scapose herb, with thick leaves. Scapes G to 7 inches long ; ' flowers 

 very small, with greenish- white sepals and no petals. — G. H, 



Tecoma Shirensis. By T. A. Sprague (Bot Mag. t. 7970).— Native 

 of Tropical Africa. Nat. ord. Bignoniacece ; tribe Tecomece. A shrub, 

 4 to 10 feet high. Leaves pinnate, inflorescence terminal, with orange 

 flowers. — G. II. 



Telangium Scotti, a New Species of Telangium (Calymmato- 

 theca) Showing* Structure. By Miss M. Benson (Ann. Bot. xviii. 

 Jan. 1904, pp. 161-177 ; 1 plate).— Telangium is a form-genus of plant- 

 remains from the Palaeozoic rocks. A description of T. Scotti is given, 

 and the authoress suggests that this body is the microsporangial organ of 

 the fossil plant Lyginodendron. A new theory as to the phylogeny of 

 integument is presented. — A. D. C. 



Thermometric Movement of the Branches in Trees and 

 Shrubs, An Undescribed. By W. F. Ganong (Ann. Bot. xviii. Oct. 

 1904, pp. 631-644 ; 6 text figs.). — The observations of the author show 

 that a number of shrubs and small trees exhibit large inward movement 

 accompanying the fall of the leaves, and an outward movement accom- 

 panying the formation of new leaves. Besides this, there is a real 

 seasonal movement, independent of leaf-fall and leaf-formation, consisting 

 of an inward movement during the advancing winter, and an outward 

 movement on the approach of spring. There exists, in addition to the 

 seasonal movement, a secondary movement, which is closely dependent on 

 temperature, a higher temperature resulting in an outward and a lower in 

 an inward movement, and this movement is appreciable within a single 

 day and night. 



The movements, though correlated with changes of temperature, are 

 not caused by temperature directly, but by the larger or smaller quantities 

 of water which the temperature determines in the plant. — A. D. C. 



Thunbergia primulina. By W. B. H. (Bot. Mag. t. 7969).— Native 

 of East Tropical Africa. Nat. ord. Acanthacece ; tribe Thicnbcrgiece. 

 Perennial ; at first silky hairy ; leaves rhomboid-ovate. Flowers solitary, 

 axillary, primrose-yellow, with an orange ring, 1| inch diameter, much 

 resembling the Primrose. — G. H. 



Tillandsia usneoides, A Study of. By F. H. Billings (Bot. Gaz. 

 xxxviii. No. 2, p. 99; 1 fig. and 4 plates). — This so-called "Moss" 

 frequents dead trees, and prefers those of a sunny situation, with scanty 

 foliage ; hence Melia AzedaracJi, with a dense foliage, is almost universally 

 devoid of it. 



The source of water supply is atmospheric precipitation, which it 

 retains in storage tissue within the leaves. The water is absorbed by 

 scales which cover them. During the dry spell in the spring of 1902 

 " Moss " plants were known to have been subjected to two months of 

 rainless exposure without injury. 



The author discusses and describes with figures the development of 

 the embryo-sac and fertilisation, the seed and its germination, but they 



o o 



