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Show 236 PHALARIS CANARIENSIS. CHAP. VI. foot in height they were measured, and the crossed plants averaged 13 · 38, and the self-fertilised 12 · 29 inches in height; or as 100 to 92. When in full flower they were again measured to the ex-tremities of their culms, as shown in the following table:- TABLE XCVIII. Phalaris canariensis. No. of Pot. Crossed Plants. Self-fertili sed Plants. - - Inches. Inches. I. 42~ 41 ~ 39H 45 ~ -- II. 37 31 * 49~ 37 ~ 29 4 2~ 37 34-~ - III. 37 ~ 28 3~4 Og 28 4-3 34 IV. 4-0~ 35~ 37 34 ~ Total in inches. 4-28·00 392·63 The eleven crossed plants now averaged 38·9, and the eleven self-fertilised plants 35 · 69 jnches in height; or as 100 to 92, which is the same ratio as before. Differently to what occurred with the maize, the crossed plants did not flo·wer before the selffertilised; and though both lots flowered very poorly from having been kept in pots in tho greenhouse, yet the self-fertiUsed plants produced twenty-eight flower-heads, whilst the crossed produced only twenty! Two long rows of the same seeds were sown out of doors, and care was taken that they were sown in nearly equal number; but a far greater number of the crossed than of the self-fertilised seeds yieldr.d plants. The self-fertilised plants were in con· Bequcnce not so much crowded as the crossed, and thus had an advantage over them. When in full :flower, the twelve tallest plants were carefully selected from both rows and measured, as shown in the following table:- CHAP. VI. PHALARIS CAN ARIENSIS. 237 TABLE XCIX. Phalaris canariensis (growi·ng in the open g1·ound). Crossed Plants, twelve Self-fertilised Plants, tallest. twelve tallest. Inches. Inches. 34k 35~ 35h 31k 36 33 35§ 32 35~ 31~ 36k 36 36~ 33 38~ 32 36~ 35~ 35 ~ 33~ 34k 34g 34~ 35 T_?tal in} 429 . mches. 5 I 402•0 The twelve crossed plants here average 35 · 78, and the twelve self-fertilised 33 · 5 inches in height; or as 100 to 93. In this case the crossed plants flowered rather before the self-fertilised, and thus differed from those growing in the pots. |