No. 3, July, 1921] MOEPHOLOGY, ETC., VASC. PLANTS 289 



from any form of Chrysothamnus nauseosus: Its nature and properties; the distribution and 

 habitats of the various forms of the plant producing it; the amounts of Chrysil available 

 in western North America as estimated by districts; microscopical methods and chemical 

 analysis as methods for detecting the presence of rubber and determining its amount; the 

 results of the application of these methods in each variety of the species; distribution of 

 rubber in the plant; factors influencing rubber content; methods of harvesting; possibilities 

 of C. nauseosus as a cultivated plant and its cultural requirements. Primarily this is a study 

 of the anatomy and histology of the varieties of the species mentioned in its various dis- 

 tricts, with certain reference to the possibilities of Chrysil being utilized, especially in times of 

 rubber scarcity. — W. A. Setchell. 



2011. Hall, Harvey Monroe, and Thomas Harper Goodspeed. The occarrence of 

 rubber in certain West American shrubs. [Part III of: Hall H. M., and T. H. Goodspeed. 

 A rubber plant survey of northwestern North America.] Univ. California Publ. Bot. 7: 265- 

 278. 2 fig. 1919. — The present paper deals with the following: I, Chrysothamnus (exclusive 

 of C. nauseosus) and Haplopappus; II, regional distribution of rubber in Haplopappus; 

 III, species in which no rubber is found. — W. A. Setchell. 



2012. Harris, J. Arthur, Edmund W. Sinnott, John Y. Pennypacker, and G. B. 

 Durham. The vascular anatomy of dimerous and trimerous seedlings of Phaseolus vulgaris. 

 Amer. Jour. Bot. 8: 63-102. 23 fig. 1921. — The gross vascular anatomy of normal ("di- 

 merous") bean seedlings and of abnormal "trimerous" forms (with 3 cotyledons and 3 primor- 

 dial leaves) were studied descriptively and biometrically . In the typical condition of the nor- 

 mal seedling the root is tetrarch, there are 8 bundles in the hypocotyl, 2 strands depart for each 

 cotyledon and the remaining bundles produce 12 strands in the epicotyl. In the typical tri- 

 merous seedling the root is hexarch, there are 12 bundles in the hypocotyl, 2 strands depart to 

 each cotyledon and there are from 14 to 18 strands in the epicotyl. Additional, or "inter- 

 calary," bundles appear in the hypocotyl of both types, but more often in normal seedlings. 

 Bundle number in both types showed considerable variation, and the degree of variability 

 differed with the seedling type and the region of the plant. Biometrical constants for the 

 mean, standard deviation, and coefficient of variability for bundle number were determined 

 for the various types of bundles and for the different regions of both seedling types. The 

 variability in number of root poles is higher in trimerous than in dimerous seedlings. Inter- 

 calary bundles are highly variable in both types. In the hypocotyl, bundlenumberisfarmore 

 variable in dimerous than in trimerous seedlings, but in the epicotyl just the reverse is true. 

 Explanations of these differences are offered, based on a study of the general and comparative 

 morphology of the plants in question. The authors emphasize "the importance of the use 

 of both biometric and comparative methods to supplement each other in any attack upon 

 the problems of general morphology or of morphogenesis." — E. W. Sinnott. 



2013. KoNDO, M. Ueber die in der Landwirtschaft Japans gebrauchten Samen. [Seeds 

 used in Japanese agriculture.] Ber. Ohara Inst. Landw. Forsch. 1: 399-450. 16 fig. 1919. — 

 A continuation of descriptions already published (see Bot. Absts. 5, Entry 37) dealing with 

 certain morphological characters of seeds and seedlings. — The present article describes seeds 

 of the following plants: Allium fistulosum, A. odorum, A. cepa, A. porrum, Daucus Carota, 

 Cryptotaenia canadensis var. japonica, Apium graveolens, Petroselinum sativum, Arctium 

 lappa, Lactuca saliva, Chrysanthemum coronarium, C . cinerarii folium, and C. roseum. — H. S. 

 Reed. 



2014. Marloth, R. Notes on the function of the staminal and staminodal glands in the 

 flowers of Adenandra. Ann. Bolus Herb. 3: 38-39. PI. 1., fig. A. 1920. — The flower possesses 

 5 perfect stamens and, alternating with them, 5 sterile staminodes. Each of these organs 

 bears a gland at its apex which secretes a viscid fluid. The secretion is a kind of balsam. 

 The flowers are strongly protandrous. When the bud opens the staminodes connive toward 

 the center of the flower, their glands being viscid; the stamens, on the other hand, stand erect 

 outside the staminodes, the anthers being still closed and the apical glands erect and dry. 



