Where Tees in tumult leaves his source,
Thundering o'er Caldron and High Force.
Scott.

A first glance at the bleak and inhospitable moorland of Upper Teesdale would not lead one to suppose that it is famous for its flora. No more desolate-looking upland could be imagined; the great wolds stretch away monotonously, broken only by a few scars that overhang the course of the stream, and devoid of the grandeur that is associated with mountain scenery. No houses are visible, except a few white homesteads that dot the slopes—their whiteness, it is said, being of service to the farmers when they return in late evening from some distant market and are faced with the difficulty of finding their own doors. Its wildness is the one charm of the place; in that it is unsurpassed.

But this bare valley, botanically regarded, is a bit of the far North, interpolated between Durham, Westmorland, and Yorkshire, where the Teesdale basalt or "whinstone" affords an advanced station for many rare plants of the highland type as they trend southward; and there, for five or six miles, from the upper waterfall of Caldron Snout to that of High Force, the banks of the Tees, with the rough pastures, scars, and fells that form its border, hold many floral treasures.

The first flower to attract attention on these wild lawns is that queen of violets, the mountain pansy (viola lutea), not uncommon on many midland and northern heaths, but nowhere else growing in such prodigality as here, or with such rich mingling of colours—orange yellow, creamy white, deep purple, and velvet black—till the eye of the traveller is sated with the gorgeous tints. To the violet tribe this pansy stands in somewhat the same relation as does the bird's-eye primrose to the primulas; it is a mountain cousin, at once hardier and more beautiful than its kinsfolk of wood and plain. Seeing it in such abundance, we can understand why Teesdale has been described as "the gardener's paradise;" but the expression is not a fitting one, for "gardener" suggests "trowel," and the nurseryman is the sort of Peri to whom the gates of this paradise ought to be for ever closed.

But perhaps the first stroll which a visitor to Upper Teesdale is likely to take, is by the bank of the river just above High Force; and here the most conspicuous plant is a big cinquefoil, the potentilla fruticosa, a shrub about three feet in height, bearing large yellow flowers. Rare elsewhere, it is in exuberance beside the Tees; and I remember the amused surprise with which a dalesman regarded me, when he saw my interest in a weed that to him was so familiar and so cheap.

But the smaller notabilities of the district have to be personally searched for; they do not obtrude themselves on the wayfarer's glance. On the Yorkshire side of the stream stands Cronkley Scar, a buttress of the high moor known as Mickle Fell; and here, in the wet gullies, may be found such choice northern plants as the Alpine meadow-rue; the Scottish asphodel (Tofieldia), a small relative of the common bog-asphodel; and the curious viviparous bistort, another highland immigrant, bearing a spike of dull white flowers and small bulbs below.

The fell above the scar is a desolate tract, frequented by golden plover and other moorland birds. On one occasion when I ascended it I was overtaken by a violent storm of wind and rain, which compelled me to leave the further heights of Mickle Fell unexplored, and to retreat to the less exposed pastures of Widdibank on the opposite side of the Tees, here a broad but shallow mountain stream, which in dry weather can be forded without difficulty but becomes a roaring torrent after heavy rains. In the course of two short visits, one in mid-July, the other in the spring of the following year, I twice had the opportunity of seeing the river in either mood, first in unruffled tranquillity, then in furious spate.

It is in May or early June that Teesdale is at the height of its glory; for the plant which lends it a special renown is the spring gentian, perhaps the brightest jewel among all British flowers, small, but a true Alpine, and of that intense blue which signalizes the gentian race. Here this noble flower grows in plenty, not in wide profusion like the pansies, but in large and thriving colonies, not confined to one side of the stream. It was on the Durham bank that I first saw it—one of those rare scenes that a flower-lover cannot forget, for the blue gentians were intermingled with pink bird's-eye primroses, only less lovely than themselves, and close by were a few spikes of the Alpine bartsia, whose sombre purple was in marked contrast with the brilliant hues of its companions.

Of this rare bartsia I had plucked a single flower on my previous visit to the same spot, but then in somewhat hurried circumstances. I had been crossing the wide pastures near Widdibank farm in company with a friend, who, having heard rumours of the temper of Teesdale bulls, had unwisely allowed his thoughts to be somewhat distracted from the pansies. We were in the middle of a field of vast extent, when I heard my companion asking anxiously: "Is that one?" It certainly was one; not a pansy, but a bull; and he was advancing towards us with very unfriendly noises and gestures. We therefore retired as quickly as we could, without seeming to run—he slowly following us—in the direction of the river; and there, under a high bank, over which we expected every moment the bulky head to reappear, I saw the Alpine bartsia, and stooped to pick one as we fled, my friend mildly deprecating even so slight a delay.

Now, however, on my second visit, I was able to examine the bank at my leisure, and to have full enjoyment of as striking a group of flowers as could be seen on English soil—gentian, bird's-eye primrose, Alpine bartsia—and as if these were not sufficient, the mountain pansy running riot in the pasture just above.