Several months ago, organizers of a Mesoamerica-focused botanical organization wrote FLAAR/FLAAR Mesoamerica to ask if we could provide a PowerPoint presentation on botany of Guatemala at their XXII Congreso Mexicano de Botánica. So we accepted and this weekend two of us (Nicholas Hellmuth and Belén Chacón Paz) fly to Mexico City and then transfer to Puebla. Chacon has been doing her own field work in Izabal on manatee. For FLAAR Mesoamerica she works on our wild native edible foods project.
Pontederia cordata – edible plant – Nov 2021 – Nikon D810 Photo by Nicholas Hellmuth
The slot provided of Sept. 27, 2022, has 15 minutes for presentation and 5 minutes for questions-and-answers. I will start to show the plants of different wetlands ecosystems of the eastern half of the Municipio de Livingston, Izabal, Guatemala. Then the rest of the lecture will be on what wild native plants we have found in wetlands of the Reserva de la Biosfera Maya (RBM) of Peten area of Guatemala. We will focus on wetlands of PNYNN, PNLT, and La Gloria concession area of Municipio San Jose. Wetlands of PANAT we will initiate in October, so that would be for a future update.
Pontederia cordata – edible plant – Nov 2021 – Nikon D810 Photo by Nicholas Hellmuth
Our PPTx has all high-resolution digital photos from aerial cameras and ground level panoramas plus macro close-ups of flowering plants. FLAAR specializes in digital photography so we wish to show to hundreds of capable botanists at this event how it helps to have digital photography equipment (so not just a point-and-shoot camera).
Pontederia cordata – edible plant – Nov 2021 – Nikon D810 Photo by Nicholas Hellmuth
During the recent ten years I have never seen so many Angel’s Trumpet flowers in our garden on a single day. Each of the clusters of these small trees is shimmering in pendant flowers of Brugmansia species. You can find these in thousands of gardens all over Guatemala: white, yellow, or pink flowers. Although I prefer to have wild flowers that are native, so far we have not found any native Datura to transplant to our garden. Datura flowers often stand up; Brugmansia flowers always hang straight down.
We have yellow flowers and white flowers; I show the yellow ones here. We thank Dr Miguel Torres for sharing cuttings of Brugmansia from his garden outside Antigua Guatemala.
The last three weeks it has rained almost every day; then came the annual canicula (a one week period of pure sun with no rain or heavy cloud cover). So this is probably what encouraged so many to flower.
Local bees absolutely love these flowers, but humans should not sniff, snort, swallow or otherwise use these flowers to eat or even to taste.
While driving the 40km route to one of the furthest savanna ecosystems in the forestry concession “La Gloria” (Reserva de Biosfera Maya, Petén), we found what we think to be Bignonia binata (also known as bejuco de ajo) flowers. The flowers were emerging from the trunk of the plant, near the ground.
On May 6, at 13:56 pm our team was driving through some of the most well conserved forests in Petén when Sergio, who is part of the team, saw a few purple flowers emerging near the ground. At that moment, he thought that they were terrestrial orchids. Nevertheless, we still had a long route to travel (in order to find more savanna ecosystems that day), and we didn’t stop, so he left a mark in the GPS.
Sony A1, 90mm lens. May 6, 2022. Photographer: Edwin Solares.
The next day, Teco (our local guide) decided to stop and check the same flowers. He said that he had seen the flowers the previous day, and he wanted to have a better look to check what they could be. That’s when we all noticed that they seem to be “bejuco de ajo” flowers, but they were emerging directly from the trunk, a few centimeters above the ground.
Although we are not still sure about the species, given that there were not any leaves growing at least 10 meters above the ground, we suspect that this plant might be Bignonia binata. This vine is pretty common in Petén and it is difficult not to spot it because it gets huge amounts of bright pink flowers. We have actually found it flowering massively along the roads of Paso Caballos.
What we hadn’t seen before is axilar flowers that emerged from the trunk, a few centimeters above the ground. In this regard, the plant we found was a massive liana that scrambled through the vegetation to reach the tall, perhaps 25m high, canopy. As well, it didn’t have any leaves or flowers that we could spot or photograph with any of the long range lenses that we had at the moment. For that same reason, the two inflorescences that we did get to photograph near the ground not only intrigued us, but also let us identify the species. It would be interesting to do more research on which pollinators inhabit this lower portion of the forest (and for that reason, could pollinate these flowers), and on how this individual plant developed flowers near the ground as a mechanism to attract such pollinators.
Sony A1, 90mm lens. May 6, 2022; 11:35am. Photographer: Edwin Solares.
Botanical description:Bignonia binata belongs to the BIGNONIACEAE family. It is a vining herb with secondary growth or commonly called "woody". Its opposite compound leaves, with simple tendrils. Its inflorescence is a termile fascicle with 3 white to purple flowers.
It flowers mainly in April, May, June and July and bears fruit in May, July and August. It generally grows on the shores of rivers, lakes and wetlands, entangling itself in trees if it is around it and is distributed from Mexico to Argentina. (Ochoa, Moreno, Jiménez, Ramon, Muñiz & Haas. 2017)
Kingdom
Plantea
Phylum
Tracheophyta
Division
Magnoliophyta
Class
Magnoliopsida
Order
Lamiales
Family
Bignoniaceae
Genius
Bignonia
Species
Bignonia binata
Bibliography
OCHOA, S., MORENO, F., JIMÉNEZ, N., RAMOS, L., MUÑIZ, L. and M. A. HASS
2017
Guía de plantas acuáticas ribereñas de la cuenca del Usumacinta. 322 pages.
Aristolochia grandiflora is potentially the largest flower of Guatemala. It grows from a relatively thin vine in the Peten and also high in the mountains of Alta Verapaz. Friends provided us the seeds but we had to plant dozens year after year until it decided to grow at 1,500 meters above sea level around the home/office of FLAAR Mesoamerica.
Today there were two of these giant flowers. I show one here; it’s not full size yet, but close.
This side is pink-green; this is the side in the shade, with no sun shining on it.
If you look on the Internet you see photographs of primarily the open part; but in our garden that does not open. And the flower begins to wilt, rot, and falls off it you touch it (to try to turn it so you can photograph it at a good angle; we will show the older flower in an eventual FLAAR Report on this flower. The one here is young; still has a few days to grow before beginning to wilt.
So far one flower has produced a seed pod, about the size and shape of a small cacao pod.
This side is pink-red color; this is the side facing the sun.
In May we continue our exploration in the Reserva de Biósfera Maya (RBM). We had the opportunity to visit the "Multiple Use Zone" where the forestry concessions are located, we focus mainly on “La Gloria” concession. Among the most interesting plant species that we found was the genus Helosis, since at first glance it looks like a fungus. But then we realize it was actually a plant because we have documented it previously in Sayaxche, Petén.
Why does it look like a fungus?
Balanophoraceae is a family of 17 genera of holoparasitic geophytes, that means, a plant that takes all its nutrients from the host plant because it does not have chlorophyll in its tissues. It has roots characterized by an aberrant vegetative and underground body, without leaves, stems or roots, called tuber, which may have rhizome-like branches. These parasitic plants attach to the root of host shrubs and trees of dark tropical forest species. The inflorescences are the only aerial part of the plant and several of them can appear along the rhizomes, making it difficult or impossible to define an individual. A peculiarity of the inflorescences is their endogenous origin (in relation to their own tissues), a unique characteristic in angiosperms. Its flowers are minute and a wide range of extreme reductions can be observed between genera, especially in female flowers and similarly in its seeds, with embryos consisting of few cells (Hansen, 1980; Kuijt, 1969; Mauseth, Hsiao & Montenegro, 1992, Heide, 2008; Su, Hu, Anderson, Der & Nickrent, 2015).
Helosis is one of the genera of the Balanophoraceae family It includes three species, the recently discovered H. antillensis, H. ruficeps and H. cayennensis, that has two varieties: var. cayennensis and var. Mexicana (Gonzalez, Sato & Marazzi, 2019)
Helosis cayennensis being pollinated by Trigona fulviventris. La Gloria forest concession, Reserva de Biósfera Maya (RBM) May, 2022. Photograph by Edwin Solares
Botanical Information:
It has light brown tubers, irregular, with a rough surface, about 20 to 35 mm long by 20-30 mm wide and no more than 20 mm high, located about 5 cm deep. The rhizomes are 4-5 mm in diameter, light brown, branched, aphyllous, arranged parallel to the surface, about 5-7 cm deep. they form a network that begins in the tubers and on them the flower stems are formed. The stems of the underground system are cylindrical, solid, and measure up to 18 cm in height and 1.5 cm in diameter. The base of the peduncle is ring-shaped with bracts 2-5 mm high, welded at their bases and with irregular triangular ends. The inflorescence rises at the end of the floral peduncle, it is an oval spadix that in the adult state reaches about 2.5 to 3 cm wide and up to 5-6 cm long, it is covered by capitate bracts, hexagonal in tangential view, deciduous, 2.5mm wide by 5.5mm high (Fontana & Popoff. 2006).
It is exhausting to hike from base camp (tents far away along Rio Sacluc) to reach Savanna #10. So we have to stop to rest a few minutes every hour (or every kilometer). This seasonally inundated savanna is so large and has so many different ecosystems within its several square kilometers that we visit here several times each year (since in each month different plants are flowering).
Three of the team are resting up in the calabash tree, the other ten are below. A football field behind us are lots of clusters of tasiste palm, found in most seasonally inundated savannas.
Photo by Emanuel Chocooj with DJI Phantom 4 drone June 5, 2022.
Posted June 17, 2022. Written by Nicholas Hellmuth
