Skye Flora

Yellow Rattle


Rhinanthus minor

Taxonomic note: Sometimes R borealis, which occurs on Skye, is counted as a separate species, but not here.  Stace (1996) lists 6 subspecies of R minor, of which R borealis is one, and adds "some populations do not fit into any of them... the subspecies may be better abandoned."

Rhinanthus minor

Photo © Carl Farmer
9 Aug 2002 Scorrybreac

Frequent in hay fields and lowland grassland.  Occasional in upland grassland and rock ledges

Height c 10-50 cm.  Flower length c 12-16 mm

Skye ID: Unmistakable in flower.  In fruit has characteristic seed-pods, as shown on left, which rattle when shaken.  Plant not purplish like Louseworts.

Other features: Annual parasitic plant.  Stems normally black-spotted.  Upper lip of flower has 2 purple or whitish teeth at tip.

The roots parasitise the roots of adjacent plants (of no particular kind, as far as I know) and these sometimes respond by gall production, making Yellow Rattle the only Skye flowering plant species that causes galls on other flowering plants.

Back to species list
 

Rhinanthus minor

Photo © Carl Farmer
17 Jul 2003 Storr
Flower 16 mm from base of calyx to tip of petals

  Rhinanthus minor

Photo © Carl Farmer
17 Jul 2003 Storr
Plant 12.5 cm high

Typical specimen from a mountain rock ledge

 

Rhinanthus minor

Photo © Carl Farmer
9 Jun 2003 Penifiler
 

  Rhinanthus minor

Photo © Carl Farmer
9 Jun 2003 Penifiler
Right-hand flower 14 mm long
from join with stem to tip

Lowland plants from a flower-rich neutral-to-alkaline roadside


Back to species list