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[[preprinted]] B&PN[[underlined]]o[[/underlined]] 13536 [[/preprinted]] [[blank page]] [[end page]] [[start page]] [[preprinted]] 23 [[/preprinted]] C=climat G=[[geol?]] O=ornith B=bot I=insects Z-Zoal J=journal 200 .03 ---- 6.00 [[image-flower with stem cross-section]] [[parts of flower head labelled:]] petals(24) sepals(50+/-) stamens(100+/-) (no chambers) (many seeds stigmas (18) (united into tubular pistil. Stamens in 2 groups. One gr. forms layer 1 thick on inside of corolla tube, united to it. Other group arise loose in th tube.