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Mutisia Sep. 6

A plant being put on floor which probably affected movement, tip of tendril made zig zag line rising upwards which perhaps represents 3 1/2 ellipses in 6° 30'.

Stem moved a little possibly to light, leaves long with many alternate simple leaflets. Petiole produced into flattened tendril with a few alternate simple lateral branches, representing leaflets.) The whole petiole & tendril curved from side to side. — Least modified t. which I have seen.

Sept. 7' one undivided lower t. edged à with laminæ (also 1 branch of longer & older t. woolly above, naked beneath)— [illeg] & its branches all contract into open helix—

[in margin:] Branch of t. stand farther apart than leaflets.

Petiole of bearing leaflets nearly 3 inches long, Young Plant of which tendril was 2 1/4 long with 2 branches; another nearly 2 1/2

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Tendrils square a little flattened & still look like curled petiole & midrib of lateral leaflet with laminæ reduced.

All leaves woolly above & naked beneath??

Sept. 7th The axis made small revolutions two, each in about 2°. 5. The tendril made one very small at same rate & then rose & made some zigzags. — perhaps leaf old, as new one is unfolding.—

Whole tendril & petiole curved with tips of t.s branches a little hooked — after clasping— can straighten itself— T. with one or 2 or 3 lateral branches, latter case commonest — rarely no branch.—

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Mutisia

(This plant [illeg] from belonging to greatest n. order, which, however, contains singularly few climbing plants— We have seen in Table one twining genera & Mutisia is, I believe, sole genus with tendrils.

The tendrils are moreover, less altered from petioles & leaflets, than any others seem by me. — Nevertheless in all great leading characteristic of spont movement & sensibility &c — resembles other tendril-bearers.—)

Sept 9th Tendril with internode free made one ellipse in in 1°. 49'; a second with longer axis at right angle to last in 1°. 24' — A third larger ellipse parallel to last in about 1°. 40', for it

Rate in different part of course very unequal.

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then followed crooked course & began an ellipse in direction of the first—

It sometimes followed sun or went against it.

Petiole alone from upper leaf to base where joined to axis, moved irregularly, (but certainly moved) & slowly & made a figure perhaps representing an ellipse in 2°. 40', so slower than internodes which seems to cause chief movement of tendril.

10' Petiole alone moved, first downwards & then laterally & then upwards long swing & then a little curl — all irregularly but not an ellipse [sketch]

Sept. 12th Axis & petiole free — made during a very irregular figure, perhaps representing 3 or 4 ellipses— figure clearly affected by the usual upward & westward movement of whole petiole

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Mutisia

Sept. 12th — Petiole tied at last leaflet, (tying caused whole peti tendril to bow down), when it righted itself it moved vertically up & down more downward than upward several times in same plane, but movement a short distance.

Sept 13th Axis secured — petiole & tendril free, observed during 10 hours, made all annexed figure — so whole moved as before a little laterally up & down, with upwards movement preponderant— so it was before—probably light has much to do with it — & certainly moves far slower than internodes. — Movement also to West in both cases. —

[figure] 6° P.m W 6° 50 E 8°. 50'

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Tendrils retain sensibility for unusually long period — those of leaves 5 or 6 beneath the last formed active one, being still active.

(Oct. 26th The t. resembles the petiole in structure: in both upper side in both being angular, furrowed, almost colourless in middle & edged with green— The latter expands sometimes into rudimental laminæ.— The lateral branches of t. resemble the main stem of t.)

Oct 27th When not caught t. do not contract spirally, merely tips curl a little inwards

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Sept 14th Ten. not at all sensitive on upper side, slightly so laterally (so that by rubbing two branches will converge & cross) & very sensitive on lower side— — Carrying plant just touched & knocked against other branches & curled in. — An old t. rubbed a few times on lower side was well arched in 15', was straight again in 6°.— Petiole, upper end & base of tendril, even on lower side not sensitive to several light rubs. — A tendril after 3 light rubs became curved in 5'.

Another very young, but just expanded, t. perceptibly curved from single rub with twig in 3'.

These two tendrils were not perfectly straight in 6°. 30'—

One that had coiled into helix from rough knock, was not quite straight after 13°

The base of t. between upper leaflet & up lower tendril-branch, resting on pin became in 24° slightly curved downwards— so base almost insensible.

Petiole quite insensible

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Sept 15th Before 24° most curled t' into helix, quite straightened themselves.

T. half way between upper leaflets & lowest branch of t. utterly insensible on lower side to prolonged contact. —

Sept 15. Tendrils alone (tip of petiole recurved); moved short distance up, in crooked course & then down & still more down during night

Sept. 16 Tendril alone, during 13° was always in movement, & made about 4 very irregular small ellipses, (with longer axes horizontal or oblique) & late in evening moved downwards, so partake of downward movement which petiole has.

I may say that petiole moves from light, but irregularly, as if it had some little spontaneous movement.—

Tendrils contract a little spirally after catching