Wednesday, May 12, 2010

Artocarpus atilis

Here in Waimea Valley Botanical Garden, we now visit the breadfruit tree, or Artocarpus atilis. I saw this tree elsewhere in Honolulu and was always struck by the huge feathery leaves. With such big leaves (check out the bottom pic, my foot's about 8" long so the leaf must be close to 20") you'd expect a coarser texture in the canopy but the deep narrow leaf sinuses soften the whole look.


Sadly, this member of the mulberry (Moraceae) family was not in fruit, as I would have loved trying it out. It's called breadfruit, obviously enough, because the plant is very, very starchy. It's about a quarter carbs and the rest is water. Because of it's starchiness, it's often baked or fried.



Breadfruit is also a very high-fruiting tree, producing impressive fruit yields. In fact, Captain William Bligh and his infamous Bounty crew was tasked with harvesting breadfruit from Tahiti so the British could cultivate it in the Caribbean. They aimed to do so because the plant would be a fast and cheap source of food for British slaves. Ugh.

Artocarpus is literally Greek for breadfruit. Artos means bread and carpus means fruit or body.

Monday, May 10, 2010

Bird's Nest Fern

We have talked about epiphytes a few times on this blog and really, there can't be a better place to revisit the subject than in a valley forest in Hawaii. Below, you can see several different epiphytes growing in the canopy of a monkey pod tree (Albizia saman, more on that later).



Perhaps most beautiful are the apple green leaves of bird's nest fern (Asplenium nidis). Bird's nest ferns share their genus with 700 other species, some of which are very similar and often confused with Asplenium nidis.



This particular species can grow in trees as it is above or can grow terrestrially. They are also popular houseplants. Many of the species of Asplenium are generally referred to as spleenworts. This knowledge may give us pause as we consider the genus name again: Asplenium literally means "without spleen". It was thought, due to the spleen-shaped spores on some species of this genus, that this plant would help reduce swelling of the spleen.



Above you see some additional epiphytes, including staghorn fern (Platycerium) and what appears to be an epiphytic bromeliad, perhaps Nidularium.

Thursday, May 6, 2010

Spathoglottis plicata

Spathoglottis plicata is another one of the plants I saw on my nursery visits in Oahu. I was struck by the great, strappy leaves - they almost remind me of Acorus leaves. And of course, I am an absolute sucker for this shade of deep pink. I love it.



Even from afar, something about this plant says 'orchid' and sure enough when you look at the individual flowers, they look like miniature Vandas. Unlike Vanda, Spathoglottis is a terrestrial orchid, that is, they don't grow epiphytically. Instead they grow in soil like any other herbaceous plant.


Spathoglottis literally means 'spathe tongue' and refers to the tongue-like flower lip. Plicata means 'pleated' and refers to the leaves.

Tuesday, May 4, 2010

Traveler's Palm

This recent trip turned me around when it comes to Ravenala madagascariensis, or traveler's palm. Previously, I had kinda pooh-poohed it. The form is just so...unnatural for a tree. People always seem to plant them because they like the flat rigid form then are dismayed when they see the wind shred the leaves to tatters. It always seemed a bit...gimmicky.



And if I had only encountered this plant in Waikiki then I think my opinion would remain unchanged. But luckily I went to the north shore for some vacation time after my site work and stumbled upon the Waimea Valley Botanical Garden. I was going to Waimea valley primarily to seek out the waterfall, so imagine my delight when I saw there were thousands of plants, all with labels.


I can only imagine how difficult it is to maintain a garden in a jungle valley and sure enough the landscape of the Waimea Valley Botanical Garden is sprawling and a bit shaggy. Personally, I preferred that; it would just seem wrong for a tailored garden to appear in a site like this. And I especially liked encountering this massive clump of traveler's palm growing alongside a path. It reminded me of the many people who have sought fresh water in the crevices of the leaves while on long, isolating treks (indeed, this is why the plant is called traveler's palm). Someday, when I have my Hawaiian villa, I think I will grow a few traveler's palms and let them run wild, clumping into an almost unmanageable grove.


Despite the use of "palm" in the common name, Ravenala madagascariensis is actually more closely related to bird-of-paradise (Strelitzia reginae) than any true palm. The flowers are similar too, though Strelitzia's blossoms are more colorful and a bit 'neater' looking.



Finally, as the species name would imply, this plant is not only native to Madagascar but is endemic to the island. It is not found in the wild anywhere else. In fact, many posit that the traveler's palm and one of its pollinators, the ruffled lemur co-evolved. This is likely based on the shape and size of the lemurs muzzle and the Ravenala's blossom.