Category Archives: Animals

Pinkhead smartweed

This week’s Friendly Friday challenge theme is ‘The Color Pink.’ See more responses here.

Pinkhead smartweed (Polygonum capitatum or Persicaria capitata) is a groundcover that hails from western China and the Himalayas. It’s variously known as pinkhead knotweed, pink knotweed, Japanese knotweed, pink-headed persicaria, or pink bubble persicaria. I use pinkhead smartweed for the very good reason that I like the name. It sounds like the name of someone pretentious, but slightly seedy, from the alleged upper crust of society.

In this bounty of names, a couple of elements stand out. One is ‘pink,’ the other is ‘weed.’ This is a very pink plant and, in Hawaii and elsewhere, an invasive weed. Drive eastbound over Saddle Road (officially Hawaii Route 200, the Daniel K. Inouye Highway) and, once you cross the saddle and begin your descent, this plant will become obvious very quickly. It lines the road on both sides for several miles with very little in the way of other plants competing for that space. This is because pinkhead smartweed will grow in poor ground and lava fields fit that description.

This is also a stretch of highway that, relatively recently, was converted from a narrow, winding road, that rental car companies routinely forbid their clients from driving on, to a wide, smooth thoroughfare, the only place on the island where you can legally go 60 mph, and where you can expect to receive a ticket if you go 80 mph like everybody else.

Redoing the road left verges of rock and gravel and very little else. Pinkhead smartweed was quick to move in and colonize this unpromising territory so that now the descent toward Hilo begins with pleasing pink borders.

The top photo shows the rugged kind of ground pinkhead smartweed can grow in. To the right, bees appreciate the flowers of this plant growing at an elevation over 5,000 feet. Below, the collapse of a lava tube has left a shady hole where pinkhead smartweed, an endemic amaumau fern, and an ohia tree have established a good foothold.

Baby gecko on bird of paradise

Last month, I posted (here) a photo of a gold dust day gecko drinking from a bird of paradise flower. This photo, taken last week, is from that same clump of plants. This flower is past its prime, but the gecko has not yet reached adulthood and has already had at least one narrow escape judging by its missing tail. It kept its eyes on me, probably wondering if I represented another threat.

Giant African land snail dicing with death

I spotted this giant African land snail in the yard a few days ago, moving purposefully through the wet grass. Unfortunately, it was moving in a straight line toward one of my truck’s wheels. Since I was about to get into the truck and drive away, the snail was perilously close to getting smushed. Instead, I picked it up and moved it out of the way before driving off.

Given that the giant African land snail is an invasive species I should probably have just run it over. Next time maybe.

Watching from the shadows

I was taking photos of birds in the yard – northern cardinals, Japanese white-eyes, and saffron finches – when I noticed that I wasn’t the only one watching them intently. A neighbor’s black cat was following their every move, until it realized that it wasn’t the only one doing that. Then it turned its stare on me.

Long-tailed blue butterfly

The long-tailed blue butterfly (Lampides boeticus) is believed to have been accidentally introduced to Hawaii in the 1880s. Accidental or not, it wasn’t a good thing. Its common name, bean butterfly, gives a clue as to the problem. It damages a wide variety of bean and pea plants, both domestic and commercial.

These photos were taken on the Puna Coast Trail in Hawaii Volcanoes National Park. The plant is Vigna marina or beach pea, an indigenous plant that grows well in the harsh, exposed coastal area that the trail passes through.