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Lythrum salicaria: Long-styled Hartfield. July 29 62

The six long-stamens are of nearly equal length

The six shorter are graduated so as to be raked. All filaments are bent a little downwards, with their ends bent up into gangway. The pistil is also deflexed but end not much upturned; lies in line of lower side of calyx. Nectar secreted all round base of germen; but the opening is on upper side of flower.— Corolla a little irregular, with the upper petals thinner.

Pollen in water of the two anthers nearly the same spherico-triangular with 3 papillæ— diameter without papillæ 7-8/7000, with papillæ about 9/7000 transversely in narrowish diameter about 7/7000. If any difference pollen of short anther are largest & more triangular; there were many more grains in this latter pollen which did not expand in water.

[1v]

The stigma projects so much cd hardly be fertilised withot insects:— Projects out of Bud!

(suppose we knew that 2 workers & common ants were all bred from same parents & yet these 3 kinds paired with their own males in same communing 3 different communities, with the males intercrossing & all equally produced the 3 kinds of males & females: then we shd have the astonishing case of Lythrum.)

(Perhaps it will prove no difference in fertility only mechanical arrangement of position to favour intercrossing.)

(Pollen of upper & lower anther mature at same period.)

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Lythrum salicaria July 30 62

Short Mid-styled from Kew.

(Measured with middle eye piece)

Longer stamens, with green pollen more or light dark; length of pollen-grain dry about 12/7000 of inch breadth length & 7-8/breadth; after water spherical with papillæ 12/7000 in diameter.

Shorter stamens with yellow pollen; dry length 8-9/7000 long 5-5 1/2 /7000 in breadth; wet 8-9/7000 in diameter.—

The 3 filaments of longer stamen on lower side of flower are straight & as long as half petals & bright pink; they are pale & contorted & a little flattened just where joined to anther. The 3 other stamens of this upper whorl, have their filaments flattened elbowed & contorted in wonderful manner, so that they remain in tube of corolla; the

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Short-styled Kew

filament in middle, where elbowed are deeply furrowed & this furrow seems to receive & include yellow pollen from shorter stamens.

In the 6 stamens of lower whorl, there is slight analogous difference: those on lower side of flower having straight filaments, which consequently rise higher

The stamen of green & yellow anthers alternate.

As above in 5 flowers examined.

(But one flower had 3 lower stamens of upper whorl coudéé like the upper 3 ought to be; & it had several stamens brown & withered, & this makes me suspect whole above structure may be monstrous.—)

From examining another flower I have hardly doubt all six stamens of upper whorl ought to project freely.

I begin to doubt whether this form differs from mid-styled of N. Wales.— /over

4)

Style 1/2 as long as of "Hartfield long-styled", stig bent close to stigma at right angles so that top of stigma faces gangway & whole declined to lower side of flower. The Hartfield long-styled is straight. The surface of stigma rather rougher owing to the papillæ being a little longer than in Hartfield long-styled.— In a N. Wales mid-styled the stigma was smoother than in the long or short-styled forms!!

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Lythrum salicaria

July 30

Long-styled Hartfield.— Pollen dry of long-stamens 8-9/7000 in length & 4-5/7000 broad. (Middle eye-piece: more bad grain in the lot.

[in margin:] Look again

Short-stamens 7-8/7000 & 4-5/7000 broad. I I shd not dare trust these measurement with my mean of measurement; but on putting two heaps close together with 2/3 glass the grain of long-stamen certainly were seen to be larger.— I then compared by two adjoining heaps under 2/3 object glass. The pollen of longer stamens of long-styled with shorter stamens of Kew short-styled, on account of difference on breadth by micrometer, & the result was

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July 31. Table of pollen. (Dry)

[table not transcribed]

These must be compared in Heaps under same glass

These when compared in 2 adjoining Heaps were [sketch?] duly different

[6v]

alternation of longer & shorter a trace longer, not having strictly corresponding} When I sum up about 36 Stamens

long-styled differ in pollen. fl sh often shown by their smaller [illeg]

apply only to structure