Text-book of botany, morphological and physiological . ions\ In Sal-via pratensis and some other species of this genus ^ For a fuller description, see R. Brown, Observations on the Organs and Mode of Fecundationin Orchide^ and Asclepiadece ; Trans, Linn. Soc. 1833, and Hildebrand in Bot. Zeit. 1867, No. 34- 8i4 PHENOMENA OF SEXUAL REPRODUCTION. the mechanical contrivance for preventing self-fertihsation and for ensuring crossing^ isextremely beautiful and easy to understand. Fig. 459 represents a flower of from the side; at « is the two-lipped stigma in a receptive condition; a
Text-book of botany, morphological and physiological . ions\ In Sal-via pratensis and some other species of this genus ^ For a fuller description, see R. Brown, Observations on the Organs and Mode of Fecundationin Orchide^ and Asclepiadece ; Trans, Linn. Soc. 1833, and Hildebrand in Bot. Zeit. 1867, No. 34- 8i4 PHENOMENA OF SEXUAL REPRODUCTION. the mechanical contrivance for preventing self-fertihsation and for ensuring crossing^ isextremely beautiful and easy to understand. Fig. 459 represents a flower of from the side; at « is the two-lipped stigma in a receptive condition; and indicatedby a dotted line inside the upper lip of the corolla is the position of one of the two sta-mens. If a pin is inserted into the tube of the corolla in the direction of the arrow, thetwo stamens spring out, as indicated at a; if a humble-bee inserts its proboscis in orderto obtain the honey, the open anthers strike the back of the insect, and some of thepollen adheres to a particular part; when the bee places itself in the same position in.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1875
